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Author: N. L. Evenhuis
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 358
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Book Description
Author: N. L. Evenhuis
Publisher:
ISBN:
Category : Science
Languages : en
Pages : 358
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Book Description
Author: Robert Klinger
Publisher: Frontiers Media SA
ISBN: 2832551734
Category : Science
Languages : en
Pages : 206
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Book Description
Numerous hypotheses have been proposed to explain the dynamics in abundance of individual species, how species interact, how communities assemble, and how interactions between biotic and abiotic processes shape ecosystem stability. Many if not most of these hypotheses find some degree of support, but often only within relatively narrow spatial and temporal ranges. This is because conditions vary over time and from place to place, and so the strength and extent of processes that were the focus of a given a hypothesis become altered by other forces. Ecologists have confronted variability from two perspectives; conceptual and statistical. Conceptually, spatial and temporal variability are now recognized as being scale dependent and hierarchical. Statistically, there are many models that ecologists readily use that account for the hierarchical and scale-dependence of variability present in many datasets. But linking the two perspectives into a meaningful understanding of what variability means in real systems has been much less successful. For example, it is common to see studies where the fixed effects of a generalized linear mixed model are reported, but very often random effects are completely ignored or, at best, given scant attention. The likelihood of this being a significant problem increases greatly in what are rapidly becoming more common studies that utilize datasets spanning long temporal and/or large spatial scales, or when extreme and often unpredictable events (gray and black swans) occur.
Author: Donatella Crosetti
Publisher: CRC Press
ISBN: 1482252139
Category : Nature
Languages : en
Pages : 534
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Book Description
Mullets (grey mullets) are a family (Mugilidae) and order of ray-finned fish found in temperate and tropical waters worldwide. There are approximately 80 species of mullet; these fish have been considered an important food source in Mediterranean Europe since Roman times. This book provides a long overdue update on the biology and ecology of mullet
Author:
Publisher:
ISBN:
Category : Biology
Languages : en
Pages : 688
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Book Description
Author: Emily C. Donaldson
Publisher: University of Washington Press
ISBN: 0295745843
Category : Social Science
Languages : en
Pages : 278
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Book Description
Throughout the Marquesas Islands of French Polynesia, forest spirits share space with ancestral ruins and active agricultural plots, affecting land use and heritage preservation. As Marquesans continue their efforts to establish UNESCO World Heritage status, they grapple with questions about when sites should be preserved intact, when neglect is an appropriate option, and when deterioration resulting from local livelihoods should be accepted. In Working with the Ancestors Emily Donaldson considers how Marquesan perceptions of heritage and mana, or sacred power, have influenced the use of land in the islands and how both cultural and environmental sustainability can be achieved. The Marquesas’ relative geographical isolation and ecological richness are the backdrop for the confluence of international heritage preservation and sustainability efforts that affect both resources and Indigenous peoples. Donaldson demonstrates how anthropological concepts of embodiment, alienation, place, and power can inform global resource management, offering a new approach that integrates analyses of policy, practice, and heritage.
Author: R.M. McDowall
Publisher: Springer Science & Business Media
ISBN: 9048192714
Category : Science
Languages : en
Pages : 462
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Book Description
In many ways, this book is the culmination of more than four decades of my exp- ration of the taxonomy, biogeography and ecology of New Zealand’s quite small freshwater fish fauna. I began this firstly as a fisheries ecologist with the New Zealand Marine Department (then responsible for the nation’s fisheries research and mana- ment), and then with my PhD at the Museum of Comparative Zoology at Harvard University, Cambridge, MA, USA in the early–mid 1960s. Since then, employed by a series of agencies that have successively been assigned a role in fisheries research in New Zealand, I have been able to explore very widely the natural history of that fauna. Studies of the fishes of other warm to cold temperate southern lands have followed, particularly southern Australia, New Caledonia, Patagonian South America, the Falkland Islands, and South Africa and, in many ways, have provided the rather broader context within which the New Zealand fauna is embedded in terms of geography, phylogeny, and evolutionary history, and knowing this context makes the patterns within New Zealand all the clearer. An additional stream in these studies, in substantial measure driven by the beh- ioural ecology of these fishes round the Southern Hemisphere, has been exploration of the role of diadromy (regular migrations between marine and freshwater biomes) in fisheries ecology and biogeography, and eventually of diadromous fishes wor- wide.
Author: Linda Burhansstipanov
Publisher: University Press of Kentucky
ISBN: 0813195861
Category : Medical
Languages : en
Pages : 267
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Book Description
Income, education, job security, food and housing, and gender and race are all examples of the social determinants of health. These factors influence the health and well-being of patients, as well as how they interact with health care providers and receive health care, and unfortunately, certain biases can become a barrier to maintaining good health in some communities. Indigenous groups in North America and US-associated Pacific jurisdictions have been subjected to occupation and forced relocation, mandated boarding schools, and other attempts by state and federal governments to eliminate their cultural strengths and resources. Indigenous Public Health illustrates how successful community engagement strategies, programs, and resources within Indigenous communities have resulted in diverse, successful public health programs, and helped community members overcome barriers to health. Editors Linda Burhansstipanov and Kathryn L. Braun explore the problems that impact engagement efforts, discuss public health topics, acknowledge and honor the strengths of different communities, and emphasize that collaboration and the sharing of resources can only improve lives.
Author: Robert G. Foottit
Publisher: John Wiley & Sons
ISBN: 9781444308228
Category : Science
Languages : en
Pages : 656
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Book Description
Insect Biodiversity: Science and Society brings togetherleading scientific experts to assess the impact insects have onhumankind and the earth’s fragile ecosystems. It examines whyinsect biodiversity matters and how the rapid evolution of insectspecies is affecting us all. Insects and related arthropods make up more than 50 percent ofthe known animal diversity globally, yet a lack of knowledge aboutinsects is hindering the advance of science and society. This bookexplores the wide variety in type and number of insect species andtheir evolutionary relationships. Case studies offer assessments onhow insect biodiversity can help meet the needs of a rapidlyexpanding human population, and also examine the consequences thatan increased loss of insect species will have on the world. The book concludes that a better understanding of the biologyand ecology of insects is the only way to sustainably manageecosystems in an ever changing global environment.
Author: Harold A. Mooney
Publisher: Springer Science & Business Media
ISBN: 1461249880
Category : Science
Languages : en
Pages : 330
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Book Description
The diversity of the earth's climates superimposed upon a complex configuration of physical features has provided the conditions for the evolution of a remarkable array of living things which are linked together into complex ecosystems. The kinds of organisms comprising the ecosystems of the world, and the nature of their interactions, have constantly changed through time due to coevolutionary interactions along with the effects of a continually changing physical environ ment. In recent evolutionary time there has been a dramatic and ever-accelerating rate of change in the configuration of these ecosystems because of the increasing influence of human beings. These changes range from subtle modifications caused by anthropogenically induced alterations in atmospheric properties to the total destruction of ecosystems. Many of these modifications have provided the fuel, food, and fiber which have allowed the expansion of human populations. Unfortunately, there have been many unanticipated changes which accompanied these modifications which have had effects detrimental to human welfare in cluding substantial changes in water and air quality. For example, the use of high-sulfur coal to produce energy in parts of North America is altering the properties of freshwater lakes and forests because of acidification.
Author:
Publisher:
ISBN:
Category : Estuaries
Languages : en
Pages : 424
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Book Description
