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The loss and fragmentation of natural habitats is one of the major issues in wildlife management and conservation. Habitat "corridors" are sometimes proposed as an important element within a conservation strategy. Examples are given of corridors both as pathways and as habitats in their own right. Includes detailed reviews of principles relevant to the design and management of corridors, their place in regional approaches to conservation planning, and recommendations for research and management.
Until well into recent times, a high level of connectivity existed among ecosystems. Through the ever-increasing extent and intensity of human exploitation of natural resources, however, the pattern of human activities as islands in a sea of nature has become reversed in most of the world's regions. Habitat fragmentation is now one of the most important causes of the decline in biodiversity. The main purpose of this review is to assist the understanding of the practical value of maintaining, enhancing, creating or restoring linkages.
In Landscape Linkages and Biodiversity experts explain biological diversity conservation, focusing on the need for protecting large areas of the most diverse ecosystems, and connecting those ecosystems with land corridors to allow species to move among them more easily.
Although Bissonette (Utah Cooperative Fish and Wildlife Research Unit, Utah State U., U.S.) and Storch (Weihenstephan Center of Life Sciences, Technische U. Munchen, Germany) state that a cohesive theory of landscape ecology is not yet possible, they present 17 papers they see as providing elements of theoretical framework, specifically as related to problems of resource management practice. Separate sections address linkages between conceptual and quantitative issues, between people and the landscape, and between theory and management in the field. Annotation copyrighted by Book News, Inc., Portland, OR.
We have entered a sixth mass extinction period, and habitat loss due to human land uses has been named as one of its leading causes. By converting land to urban and agricultural land uses, humans have fragmented millions of acres of once-contiguous habitat. Fragmentation alters the spatial configuration and ecological processes of the remnant habitat fragments. These ecological changes impact plant and animal species, leading to population declines and, for some, local or total extinction. The impacts of fragmentation are projected to become more pronounced as the climate changes, hindering many species from adapting to novel climate conditions by shifting to a range with more hospitable climate conditions. Corridors can improve species viability in heavily-fragmented landscapes as well as in a changing climate by facilitating movement between separate habitat patches. Establishing broad linkages is logically feasible in areas with large reserves of habitat, primarily in the north-western region of the United States. The rest of the nation, however, lacks large habitat reserves and is dominated by private landownership. How do we establish corridors in landscapes like those in central Illinois or the sprawling metro-Chicago suburbs? Implementing linkages in these landscapes will require a coordinated, inter-governmental effort on landscape and regional scales. Legally, we must integrate stewardship into private landowner duties, update the common law meaning of 0́−harm0́+ to encompass ecological harm, and enhance government ability to curb harmful land uses. To achieve real conservation gains, however, we must move socially and culturally toward an ethic of stewardship within the private landscape.
Soils and Landscape Restoration provides a multidisciplinary synthesis on the sustainable management and restoration of soils in various landscapes. The book presents applicable knowledge of above- and below-ground interactions and biome specific realizations along with in-depth investigations of particular soil degradation pathways. It focuses on severely degraded soils (e.g., eroded, salinized, mined) as well as the restoration of wetlands, grasslands and forests. The book addresses the need to bring together current perspectives on land degradation and restoration in soil science and restoration ecology to better incorporate soil-based information when restoration plans are formulated. Incudes a chapter on climate change and novel ecosystems, thus collating the perspective of soil scientists and ecologists on this consequential and controversial topic Connects science to international policy and practice Includes summaries at the end of each chapter to elucidate principles and key points
It is often assumed that upstream land use practices have important impacts on water resources and affect the downstream users at a watershed scale, Payments by downstream users to upstream users for "environmental services" such as good water quality, less sediments or more regular water flow are widely discussed. However, much controversy exists about the direction and magnitude of such impacts, how they influence the relationships between upstream and down-stream users, and which mechanisms allow for a sharing of resulting benefits and costs by all resource users in a watershed context. To address these issues, the FAO Land and Water Development Division organized the electronic workshop "Land-Water Linkages in Rural Watersheds" from 18 September to 27 October 2000. The present publication contains the proceedings of the workshop and two papers that set the stage for the workshop discussions. The complete workshop documentation, including discussion archive, background papers, and case studies, is included on the CD-ROM that accompanies the document.
Habitat loss and degradation that comes as a result of human activity is the single biggest threat to biodiversity in the world today. Habitat Fragmentation and Landscape Change is a groundbreaking work that brings together a wealth of information from a wide range of sources to define the ecological problems caused by landscape change and to highlight the relationships among landscape change, habitat fragmentation, and biodiversity conservation. The book: synthesizes a large body of information from the scientific literature considers key theoretical principles for examining and predicting effects examines the range of effects that can arise explores ways of mitigating impacts reviews approaches to studying the problem discusses knowledge gaps and future areas for research and management Habitat Fragmentation and Landscape Change offers a unique mix of theoretical and practical information, outlining general principles and approaches and illustrating those principles with case studies from around the world. It represents a definitive overview and synthesis on the full range of topics that fall under the widely used but often vaguely defined term "habitat fragmentation."
This book provides a current synthesis of principles and applications in landscape ecology and conservation biology. Bringing together insights from leaders in landscape ecology and conservation biology, it explains how principles of landscape ecology can help us understand, manage and maintain biodiversity. Gutzwiller also identifies gaps in current knowledge and provides research approaches to fill those voids.