Author: D. Dudley Williams
Publisher: Oxford University Press, USA
ISBN: 0198528116
Category : Nature
Languages : en
Pages : 348
Book Description
'The Biology of Temporary Waters' brings together diverse global literature on pure and applied aspects of temporary waters and their biotas. It examines their roles in both natural and human environments and seeks common evolutionary themes.
The Biology of Temporary Waters
Author: D. Dudley Williams
Publisher: Oxford University Press, USA
ISBN: 0198528116
Category : Nature
Languages : en
Pages : 348
Book Description
'The Biology of Temporary Waters' brings together diverse global literature on pure and applied aspects of temporary waters and their biotas. It examines their roles in both natural and human environments and seeks common evolutionary themes.
Publisher: Oxford University Press, USA
ISBN: 0198528116
Category : Nature
Languages : en
Pages : 348
Book Description
'The Biology of Temporary Waters' brings together diverse global literature on pure and applied aspects of temporary waters and their biotas. It examines their roles in both natural and human environments and seeks common evolutionary themes.
The Ecology of Temporary Waters
Author: D. Dudley Williams
Publisher: Springer Science & Business Media
ISBN: 9401160848
Category : Science
Languages : en
Pages : 214
Book Description
The primary role of this book is to introduce the reader to, and hopefully stimulate interest in, the ecology of temporary aquatic habi tats. The book assumes that the reader will have, already, some gen eral knowledge of ecology but this is not essential. Temporary waters exhibit amplitudes in both physical and chemical parameters which are much greater than those found in most waterbodies. The organisms that live in these types of habitats have, therefore, to be very well adapted to these conditions if they are to survive. Survival depends largely on exceptional physiological tolerance or effective immigration and emigration abilities. Examples of such adaptations are given throughout the book and it is hoped that these will aid the reader in gaining an insight into the structure and function of plant and animal communities of these unusual habi tats. The final chapter suggests field and laboratory projects that should be useful to students in school and university studies.
Publisher: Springer Science & Business Media
ISBN: 9401160848
Category : Science
Languages : en
Pages : 214
Book Description
The primary role of this book is to introduce the reader to, and hopefully stimulate interest in, the ecology of temporary aquatic habi tats. The book assumes that the reader will have, already, some gen eral knowledge of ecology but this is not essential. Temporary waters exhibit amplitudes in both physical and chemical parameters which are much greater than those found in most waterbodies. The organisms that live in these types of habitats have, therefore, to be very well adapted to these conditions if they are to survive. Survival depends largely on exceptional physiological tolerance or effective immigration and emigration abilities. Examples of such adaptations are given throughout the book and it is hoped that these will aid the reader in gaining an insight into the structure and function of plant and animal communities of these unusual habi tats. The final chapter suggests field and laboratory projects that should be useful to students in school and university studies.
Encyclopedia of Inland Waters
Author:
Publisher:
ISBN: 9780120884629
Category : Fresh water
Languages : en
Pages :
Book Description
Publisher:
ISBN: 9780120884629
Category : Fresh water
Languages : en
Pages :
Book Description
Texas Aquatic Science
Author: Rudolph A. Rosen
Publisher: Texas A&M University Press
ISBN: 1623491932
Category : Science
Languages : en
Pages : 218
Book Description
This classroom resource provides clear, concise scientific information in an understandable and enjoyable way about water and aquatic life. Spanning the hydrologic cycle from rain to watersheds, aquifers to springs, rivers to estuaries, ample illustrations promote understanding of important concepts and clarify major ideas. Aquatic science is covered comprehensively, with relevant principles of chemistry, physics, geology, geography, ecology, and biology included throughout the text. Emphasizing water sustainability and conservation, the book tells us what we can do personally to conserve for the future and presents job and volunteer opportunities in the hope that some students will pursue careers in aquatic science. Texas Aquatic Science, originally developed as part of a multi-faceted education project for middle and high school students, can also be used at the college level for non-science majors, in the home-school environment, and by anyone who educates kids about nature and water. To learn more about The Meadows Center for Water and the Environment, sponsors of this book's series, please click here.
Publisher: Texas A&M University Press
ISBN: 1623491932
Category : Science
Languages : en
Pages : 218
Book Description
This classroom resource provides clear, concise scientific information in an understandable and enjoyable way about water and aquatic life. Spanning the hydrologic cycle from rain to watersheds, aquifers to springs, rivers to estuaries, ample illustrations promote understanding of important concepts and clarify major ideas. Aquatic science is covered comprehensively, with relevant principles of chemistry, physics, geology, geography, ecology, and biology included throughout the text. Emphasizing water sustainability and conservation, the book tells us what we can do personally to conserve for the future and presents job and volunteer opportunities in the hope that some students will pursue careers in aquatic science. Texas Aquatic Science, originally developed as part of a multi-faceted education project for middle and high school students, can also be used at the college level for non-science majors, in the home-school environment, and by anyone who educates kids about nature and water. To learn more about The Meadows Center for Water and the Environment, sponsors of this book's series, please click here.
Temporary
Author: Hilary Leichter
Publisher: Coffee House Press
ISBN: 156689574X
Category : Fiction
Languages : en
Pages : 161
Book Description
In Temporary, a young woman’s workplace is the size of the world. She fills increasingly bizarre placements in search of steadiness, connection, and something, at last, to call her own. Whether it’s shining an endless closet of shoes, swabbing the deck of a pirate ship, assisting an assassin, or filling in for the Chairman of the Board, for the mythical Temporary, “there is nothing more personal than doing your job.” This riveting quest, at once hilarious and profound, will resonate with anyone who has ever done their best at work, even when the work is only temporary.
Publisher: Coffee House Press
ISBN: 156689574X
Category : Fiction
Languages : en
Pages : 161
Book Description
In Temporary, a young woman’s workplace is the size of the world. She fills increasingly bizarre placements in search of steadiness, connection, and something, at last, to call her own. Whether it’s shining an endless closet of shoes, swabbing the deck of a pirate ship, assisting an assassin, or filling in for the Chairman of the Board, for the mythical Temporary, “there is nothing more personal than doing your job.” This riveting quest, at once hilarious and profound, will resonate with anyone who has ever done their best at work, even when the work is only temporary.
Ecology and Classification of North American Freshwater Invertebrates
Author: James H. Thorp
Publisher: Academic Press
ISBN: 0123748550
Category : Nature
Languages : en
Pages : 1036
Book Description
"The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This text serves as an authoritative single source for a broad coverage of the anatomy, physiology, ecology, and phylogeny of all major groups of invertebrates in inland waters of North America, north of Mexico." --Book Jacket.
Publisher: Academic Press
ISBN: 0123748550
Category : Nature
Languages : en
Pages : 1036
Book Description
"The third edition of Ecology and Classification of North American Freshwater Invertebrates continues the tradition of in-depth coverage of the biology, ecology, phylogeny, and identification of freshwater invertebrates from the USA and Canada. This text serves as an authoritative single source for a broad coverage of the anatomy, physiology, ecology, and phylogeny of all major groups of invertebrates in inland waters of North America, north of Mexico." --Book Jacket.
Intermittent Rivers and Ephemeral Streams
Author: Thibault Datry
Publisher: Academic Press
ISBN: 0128039043
Category : Science
Languages : en
Pages : 624
Book Description
Intermittent Rivers and Ephemeral Streams: Ecology and Management takes an internationally broad approach, seeking to compare and contrast findings across multiple continents, climates, flow regimes, and land uses to provide a complete and integrated perspective on the ecology of these ecosystems. Coupled with this, users will find a discussion of management approaches applicable in different regions that are illustrated with relevant case studies. In a readable and technically accurate style, the book utilizes logically framed chapters authored by experts in the field, allowing managers and policymakers to readily grasp ecological concepts and their application to specific situations. - Provides up-to-date reviews of research findings and management strategies using international examples - Explores themes and parallels across diverse sub-disciplines in ecology and water resource management utilizing a multidisciplinary and integrative approach - Reveals the relevance of this scientific understanding to managers and policymakers
Publisher: Academic Press
ISBN: 0128039043
Category : Science
Languages : en
Pages : 624
Book Description
Intermittent Rivers and Ephemeral Streams: Ecology and Management takes an internationally broad approach, seeking to compare and contrast findings across multiple continents, climates, flow regimes, and land uses to provide a complete and integrated perspective on the ecology of these ecosystems. Coupled with this, users will find a discussion of management approaches applicable in different regions that are illustrated with relevant case studies. In a readable and technically accurate style, the book utilizes logically framed chapters authored by experts in the field, allowing managers and policymakers to readily grasp ecological concepts and their application to specific situations. - Provides up-to-date reviews of research findings and management strategies using international examples - Explores themes and parallels across diverse sub-disciplines in ecology and water resource management utilizing a multidisciplinary and integrative approach - Reveals the relevance of this scientific understanding to managers and policymakers
Biodiversity in Ecosystems
Author: Juan A. Blanco
Publisher: BoD – Books on Demand
ISBN: 953512028X
Category : Science
Languages : en
Pages : 644
Book Description
The term biodiversity has become a mainstream concept that can be found in any newspaper at any given time. Concerns on biodiversity protection are usually linked to species protection and extinction risks for iconic species, such as whales, pandas and so on. However, conserving biodiversity has much deeper implications than preserving a few (although important) species. Biodiversity in ecosystems is tightly linked to ecosystem functions such as biomass production, organic matter decomposition, ecosystem resilience, and others. Many of these ecological processes are also directly implied in services that the humankind obtains from ecosystems. The first part of this book will introduce different concepts and theories important to understand the links between ecosystem function and ecosystem biodiversity. The second part of the book provides a wide range of different studies showcasing the evidence and practical implications of such relationships.
Publisher: BoD – Books on Demand
ISBN: 953512028X
Category : Science
Languages : en
Pages : 644
Book Description
The term biodiversity has become a mainstream concept that can be found in any newspaper at any given time. Concerns on biodiversity protection are usually linked to species protection and extinction risks for iconic species, such as whales, pandas and so on. However, conserving biodiversity has much deeper implications than preserving a few (although important) species. Biodiversity in ecosystems is tightly linked to ecosystem functions such as biomass production, organic matter decomposition, ecosystem resilience, and others. Many of these ecological processes are also directly implied in services that the humankind obtains from ecosystems. The first part of this book will introduce different concepts and theories important to understand the links between ecosystem function and ecosystem biodiversity. The second part of the book provides a wide range of different studies showcasing the evidence and practical implications of such relationships.
Temporary People
Author: Deepak Unnikrishnan
Publisher: Restless Books
ISBN: 1632061449
Category : Fiction
Languages : en
Pages : 208
Book Description
Winner of the Restless Books Prize for New Immigrant Writing "Guest workers of the United Arab Emirates embody multiple worlds and identities and long for home in a fantastical debut work of fiction, winner of the inaugural Restless Books Prize for New Immigrant Writing.… The author's crisp, imaginative prose packs a punch, and his whimsical depiction of characters who oscillate between two lands on either side of the Arabian Sea unspools the kind of immigrant narratives that are rarely told. An enchanting, unparalleled anthem of displacement and repatriation." —Kirkus Reviews, starred review In the United Arab Emirates, foreign nationals constitute over 80 percent of the population. Brought in to construct and serve the towering monuments to wealth that punctuate the skylines of Abu Dhabi and Dubai, this labor force is not given the option of citizenship. Some ride their luck to good fortune. Others suffer different fates. Until now, the humanitarian crisis of the so-called “guest workers” of the Gulf has barely been addressed in fiction. With his stunning, mind-altering debut novel Temporary People, Deepak Unnikrishnan delves into their histories, myths, struggles, and triumphs. Combining the linguistic invention of Salman Rushdie and the satirical vision of George Saunders, Unnikrishnan presents twenty-eight linked stories that careen from construction workers who shapeshift into luggage and escape a labor camp, to a woman who stitches back together the bodies of those who’ve fallen from buildings in progress, to a man who grows ideal workers designed to live twelve years and then perish—until they don’t, and found a rebel community in the desert. With this polyphony of voices, Unnikrishnan maps a new, unruly global English and gives personhood back to the anonymous workers of the Gulf. "Guest workers of the United Arab Emirates embody multiple worlds and identities and long for home in a fantastical debut work of fiction, winner of the inaugural Restless Books Prize for New Immigrant Writing.… The author's crisp, imaginative prose packs a punch, and his whimsical depiction of characters who oscillate between two lands on either side of the Arabian Sea unspools the kind of immigrant narratives that are rarely told. An enchanting, unparalleled anthem of displacement and repatriation." —Kirkus Reviews, Starred Review "Inventive, vigorously empathetic, and brimming with a sparkling, mordant humor, Deepak Unnikrishnan has written a book of Ovidian metamorphoses for our precarious time. These absurdist fables, fluent in the language of exile, immigration, and bureaucracy, will remind you of the raw pleasure of storytelling and the unsettling nearness of the future." —Alexandra Kleeman, author of You Too Can Have a Body Like Mine “Inaugural winner of the Restless Books Prize for New Immigrant Writing, this debut novel employs its own brand of magical realism to propel readers into an understanding and appreciation of the experience of foreign workers in the Arab Gulf States (and beyond). Through a series of almost 30 loosely linked sections, grouped into three parts, we are thrust into a narrative alternating between visceral realism and fantastic satire.... The alternation between satirical fantasy, depicting such things as intelligent cockroaches and evil elevators, and poignant realism, with regards to necessarily illicit sexuality, forms a contrast that gives rise to a broad critique of the plight of those known euphemistically as ‘guest workers.’ VERDICT: This first novel challenges readers with a singular inventiveness expressed through a lyrical use of language and a laserlike focus that is at once charming and terrifying. Highly recommended.” —Henry Bankhead, Library Journal, Starred Review “Unnikrishnan’s debut novel shines a light on a little known world with compassion and keen insight. The Temporary People are invisible people—but Unnikrishnan brings them to us with compassion, intelligence, and heart. This is why novels matter.” —Susan Hans O’Connor, Penguin Bookshop (Sewickley, PA) “Deepak Unnikrishnan uses linguistic pyrotechnics to tell the story of forced transience in the Arabian Peninsula, where citizenship can never be earned no matter the commitment of blood, sweat, years of life, or brains. The accoutrements of migration—languages, body parts, passports, losses, wounds, communities of strangers—are packed and carried along with ordinary luggage, blurring the real and the unreal with exquisite skill. Unnikrishnan sets before us a feast of absurdity that captures the cruel realities around the borders we cross either by choice or by force. In doing so he has found what most writers miss: the sweet spot between simmering rage at a set of circumstances, and the circumstances themselves.” —Ru Freeman, author of On Sal Mal Lane “Deepak writes brilliant stories with a fresh, passionate energy. Every page feels as if it must have been written, as if the author had no choice. He writes about exile, immigration, deportation, security checks, rage, patience, about the homelessness of living in a foreign land, about historical events so strange that, under his hand, the events become tales, and he writes tales so precisely that they read like history. Important work. Work of the future. This man will not be stopped.” —Deb Olin Unferth, author of Revolution “From the strange Kafka-esque scenarios to the wholly original language, this book is amazing on so many different levels. Unlike anything I've ever read, Temporary People is a powerful work of short stories about foreign nationals who populate the new economy in the United Arab Emirates. With inventive language and darkly satirical plot lines, Unnikrishnan provides an important view of relentless nature of a global economy and its brutal consequences for human lives. Prepare to be wowed by the immensely talented new voice.” —Hilary Gustafson, Literati Bookstore (Ann Arbor, MI) “Absolutely preposterous! As a debut, author Unnikrishnan shares stories of laborers, brought to the United Arab Emirates to do menial and everyday jobs. These people have no rights, no fallback if they have problems or health issues in that land. The laborers in Temporary People are sewn back together when they fall, are abandoned in the desert if they become inconvenient, and are even grown from seeds. As a collection of short stories, this is fantastical, imaginative, funny, and even more so, scary, powerful, and ferocious.” —Becky Milner, Vintage Books (Vancouver WA)
Publisher: Restless Books
ISBN: 1632061449
Category : Fiction
Languages : en
Pages : 208
Book Description
Winner of the Restless Books Prize for New Immigrant Writing "Guest workers of the United Arab Emirates embody multiple worlds and identities and long for home in a fantastical debut work of fiction, winner of the inaugural Restless Books Prize for New Immigrant Writing.… The author's crisp, imaginative prose packs a punch, and his whimsical depiction of characters who oscillate between two lands on either side of the Arabian Sea unspools the kind of immigrant narratives that are rarely told. An enchanting, unparalleled anthem of displacement and repatriation." —Kirkus Reviews, starred review In the United Arab Emirates, foreign nationals constitute over 80 percent of the population. Brought in to construct and serve the towering monuments to wealth that punctuate the skylines of Abu Dhabi and Dubai, this labor force is not given the option of citizenship. Some ride their luck to good fortune. Others suffer different fates. Until now, the humanitarian crisis of the so-called “guest workers” of the Gulf has barely been addressed in fiction. With his stunning, mind-altering debut novel Temporary People, Deepak Unnikrishnan delves into their histories, myths, struggles, and triumphs. Combining the linguistic invention of Salman Rushdie and the satirical vision of George Saunders, Unnikrishnan presents twenty-eight linked stories that careen from construction workers who shapeshift into luggage and escape a labor camp, to a woman who stitches back together the bodies of those who’ve fallen from buildings in progress, to a man who grows ideal workers designed to live twelve years and then perish—until they don’t, and found a rebel community in the desert. With this polyphony of voices, Unnikrishnan maps a new, unruly global English and gives personhood back to the anonymous workers of the Gulf. "Guest workers of the United Arab Emirates embody multiple worlds and identities and long for home in a fantastical debut work of fiction, winner of the inaugural Restless Books Prize for New Immigrant Writing.… The author's crisp, imaginative prose packs a punch, and his whimsical depiction of characters who oscillate between two lands on either side of the Arabian Sea unspools the kind of immigrant narratives that are rarely told. An enchanting, unparalleled anthem of displacement and repatriation." —Kirkus Reviews, Starred Review "Inventive, vigorously empathetic, and brimming with a sparkling, mordant humor, Deepak Unnikrishnan has written a book of Ovidian metamorphoses for our precarious time. These absurdist fables, fluent in the language of exile, immigration, and bureaucracy, will remind you of the raw pleasure of storytelling and the unsettling nearness of the future." —Alexandra Kleeman, author of You Too Can Have a Body Like Mine “Inaugural winner of the Restless Books Prize for New Immigrant Writing, this debut novel employs its own brand of magical realism to propel readers into an understanding and appreciation of the experience of foreign workers in the Arab Gulf States (and beyond). Through a series of almost 30 loosely linked sections, grouped into three parts, we are thrust into a narrative alternating between visceral realism and fantastic satire.... The alternation between satirical fantasy, depicting such things as intelligent cockroaches and evil elevators, and poignant realism, with regards to necessarily illicit sexuality, forms a contrast that gives rise to a broad critique of the plight of those known euphemistically as ‘guest workers.’ VERDICT: This first novel challenges readers with a singular inventiveness expressed through a lyrical use of language and a laserlike focus that is at once charming and terrifying. Highly recommended.” —Henry Bankhead, Library Journal, Starred Review “Unnikrishnan’s debut novel shines a light on a little known world with compassion and keen insight. The Temporary People are invisible people—but Unnikrishnan brings them to us with compassion, intelligence, and heart. This is why novels matter.” —Susan Hans O’Connor, Penguin Bookshop (Sewickley, PA) “Deepak Unnikrishnan uses linguistic pyrotechnics to tell the story of forced transience in the Arabian Peninsula, where citizenship can never be earned no matter the commitment of blood, sweat, years of life, or brains. The accoutrements of migration—languages, body parts, passports, losses, wounds, communities of strangers—are packed and carried along with ordinary luggage, blurring the real and the unreal with exquisite skill. Unnikrishnan sets before us a feast of absurdity that captures the cruel realities around the borders we cross either by choice or by force. In doing so he has found what most writers miss: the sweet spot between simmering rage at a set of circumstances, and the circumstances themselves.” —Ru Freeman, author of On Sal Mal Lane “Deepak writes brilliant stories with a fresh, passionate energy. Every page feels as if it must have been written, as if the author had no choice. He writes about exile, immigration, deportation, security checks, rage, patience, about the homelessness of living in a foreign land, about historical events so strange that, under his hand, the events become tales, and he writes tales so precisely that they read like history. Important work. Work of the future. This man will not be stopped.” —Deb Olin Unferth, author of Revolution “From the strange Kafka-esque scenarios to the wholly original language, this book is amazing on so many different levels. Unlike anything I've ever read, Temporary People is a powerful work of short stories about foreign nationals who populate the new economy in the United Arab Emirates. With inventive language and darkly satirical plot lines, Unnikrishnan provides an important view of relentless nature of a global economy and its brutal consequences for human lives. Prepare to be wowed by the immensely talented new voice.” —Hilary Gustafson, Literati Bookstore (Ann Arbor, MI) “Absolutely preposterous! As a debut, author Unnikrishnan shares stories of laborers, brought to the United Arab Emirates to do menial and everyday jobs. These people have no rights, no fallback if they have problems or health issues in that land. The laborers in Temporary People are sewn back together when they fall, are abandoned in the desert if they become inconvenient, and are even grown from seeds. As a collection of short stories, this is fantastical, imaginative, funny, and even more so, scary, powerful, and ferocious.” —Becky Milner, Vintage Books (Vancouver WA)
Invertebrates in Freshwater Wetlands
Author: Darold Batzer
Publisher: Springer
ISBN: 3319249789
Category : Science
Languages : en
Pages : 647
Book Description
Wetlands are among the world’s most valuable and most threatened habitats, and in these crucially important ecosystems, the invertebrate fauna holds a focal position. Most of the biological diversity in wetlands is found within resident invertebrate assemblages, and those invertebrates are the primary trophic link between lower plants and higher vertebrates (e.g. amphibians, fish, and birds). As such, most scientists, managers, consultants, and students who work in the world’s wetlands should become better informed about the invertebrate components in their habitats of interest. Our book serves to fill this need by assembling the world’s most prominent ecologists working on freshwater wetland invertebrates, and having them provide authoritative perspectives on each the world’s most important freshwater wetland types. The initial chapter of the book provides a primer on freshwater wetland invertebrates, including how they are uniquely adapted for life in wetland environments and how they contribute to important ecological functions in wetland ecosystems. The next 15 chapters deal with invertebrates in the major wetlands across the globe (rock pools, alpine ponds, temperate temporary ponds, Mediterranean temporary ponds, turloughs, peatlands, permanent marshes, Great Lakes marshes, Everglades, springs, beaver ponds, temperate floodplains, neotropical floodplains, created wetlands, waterfowl marshes), each chapter written by groups of prominent scientists intimately knowledgeable about the individual wetland types. Each chapter reviews the relevant literature, provides a synthesis of the most important ecological controls on the resident invertebrate fauna, and highlights important conservation concerns. The final chapter synthesizes the 15 habitat-based chapters, providing a macroscopic perspective on natural variation of invertebrate assemblage structure across the world’s wetlands and a paradigm for understanding how global variation and environmental factors shape wetland invertebrate communities.
Publisher: Springer
ISBN: 3319249789
Category : Science
Languages : en
Pages : 647
Book Description
Wetlands are among the world’s most valuable and most threatened habitats, and in these crucially important ecosystems, the invertebrate fauna holds a focal position. Most of the biological diversity in wetlands is found within resident invertebrate assemblages, and those invertebrates are the primary trophic link between lower plants and higher vertebrates (e.g. amphibians, fish, and birds). As such, most scientists, managers, consultants, and students who work in the world’s wetlands should become better informed about the invertebrate components in their habitats of interest. Our book serves to fill this need by assembling the world’s most prominent ecologists working on freshwater wetland invertebrates, and having them provide authoritative perspectives on each the world’s most important freshwater wetland types. The initial chapter of the book provides a primer on freshwater wetland invertebrates, including how they are uniquely adapted for life in wetland environments and how they contribute to important ecological functions in wetland ecosystems. The next 15 chapters deal with invertebrates in the major wetlands across the globe (rock pools, alpine ponds, temperate temporary ponds, Mediterranean temporary ponds, turloughs, peatlands, permanent marshes, Great Lakes marshes, Everglades, springs, beaver ponds, temperate floodplains, neotropical floodplains, created wetlands, waterfowl marshes), each chapter written by groups of prominent scientists intimately knowledgeable about the individual wetland types. Each chapter reviews the relevant literature, provides a synthesis of the most important ecological controls on the resident invertebrate fauna, and highlights important conservation concerns. The final chapter synthesizes the 15 habitat-based chapters, providing a macroscopic perspective on natural variation of invertebrate assemblage structure across the world’s wetlands and a paradigm for understanding how global variation and environmental factors shape wetland invertebrate communities.