The Value of Agri-environment Schemes and Farm Woodland for Bats and Nocturnal Insects

The Value of Agri-environment Schemes and Farm Woodland for Bats and Nocturnal Insects
Title The Value of Agri-environment Schemes and Farm Woodland for Bats and Nocturnal Insects PDF eBook
Author Elisa Fuentes-Montemayor
Publisher
Pages
Release 2011
Genre Bats
ISBN

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Many bat species in Europe have undergone severe population declines during the last century and one of the driving causes is believed to be the loss of roosting and foraging habitat through agricultural expansion and intensification. Modern agricultural practices have also had strong negative effects on many insect groups, such as moths, which are important components of the diets of many bat species. Agri-environment schemes (AES) have been introduced in many countries as an attempt to counteract the negative effects of intensive agriculture on biodiversity by providing financial incentives for farmers to adopt environmentally-sensitive agricultural practices. AES are potentially beneficial to bats and nocturnal insects, but the response of these taxa to their implementation had not been assessed prior to this study. Here, the potential benefits (or otherwise) that bats and their insect prey species gain from the implementation of certain AES management prescriptions was assessed using ultrasonic detectors (to assess bat activity levels) and heath light traps (to quantify nocturnal insect abundance) at 18 pairs of AES and conventionally-managed farms. In addition, the influence of the surrounding landscape on bats and insects was quantified to evaluate the relevance of a landscape-scale management approach for the conservation of these taxa. Some of the AES prescriptions assessed in this study benefited moths (and are potentially beneficial for moth-eating bats), but not Pipistrelle bats nor their insect prey. The most important factors associated with bat activity on farmland were metrics related to woodland configuration in the surrounding landscape, which suggests that conservation efforts for bats should focus on the creation and management of this habitat. Currently, some AES prescriptions aim to increase the amount and quality of woodland on agricultural land, but little is known about how woodland character relates to bat abundance and insect prey availability; therefore, recommendations for woodland creation and management rarely consider the requirements of foraging bats. Here, the influence of woodland character (e.g. vegetation structure and patch configuration) on bats and nocturnal insects was assessed. Vegetation surveys were conducted and Geographic Information Systems (GIS) were used to quantify the vegetation character and spatial configuration of 34 woodland patches within farmland. Two complementary methods (acoustic monitoring and bat trapping assisted by an acoustic lure) were used to assess the influence of woodland vegetation character, patch configuration and the surrounding landscape on bat populations. Nocturnal insect abundance at each site was assessed using heath light traps. Data presented here demonstrate that bats show species-specific associations with woodland vegetation structure and patch configuration; patterns of higher bat abundance and activity at small and isolated woodland patches suggest that bats utilize this habitat more intensively in landscapes where woodland is scarce. This thesis also shows that moths are strongly influenced by woodland character; in general, large woodland patches of compact shapes, composed of a large number of native tree species and a dense understory cover, and located close to other woodlands were associated with high moth abundance and species richness (and are potentially valuable for moth-eating bats). Other nocturnal insects (mainly Diptera) were not influenced by woodland character. This study also shows that bats and nocturnal insects are influenced by the landscape context; moths are mainly influenced by the extent of semi-natural environment (such as rough grassland and scrub) within small spatial scales (within 250 m; although effects of woodland extent were detected at larger spatial scales for woodland specialists moths). Bats are mainly influenced by woodland-related landscape metrics. Some bat species are influenced by the surrounding landscape at large spatial scales (within 3 km) and would benefit from woodland creation and management at a wide-landscape-scale. The findings presented in this thesis have important management implications for the design of agri-environment schemes. A list of management recommendations to optimize the benefits that bats and nocturnal insects gain from these schemes is presented in the final section.

Bats in Forests

Bats in Forests
Title Bats in Forests PDF eBook
Author Michael J. Lacki
Publisher JHU Press
Pages 350
Release 2007-05-11
Genre Nature
ISBN 0801884993

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Although bats are often thought of as cave dwellers, many species depend on forests for all or part of the year. Of the 45 species of bats in North America, more than half depend on forests, using the bark of trees, tree cavities, or canopy foliage as roosting sites. Over the past two decades it has become increasingly clear that bat conservation and management are strongly linked to the health of forests within their range. Initially driven by concern for endangered species—the Indiana bat, for example—forest ecologists, timber managers, government agencies, and conservation organizations have been altering management plans and silvicultural practices to better accommodate bat species. Bats in Forests presents the work of a variety of experts who address many aspects of the ecology and conservation of bats. The chapter authors describe bat behavior, including the selection of roosts, foraging patterns, and seasonal migration as they relate to forests. They also discuss forest management and its influence on bat habitat. Both public lands and privately owned forests are considered, as well as techniques for monitoring bat populations and activity. The important role bats play in the ecology of forests—from control of insects to nutrient recycling—is revealed by a number of authors. Bat ecologists, bat conservationists, forest ecologists, and forest managers will find in this book an indispensable synthesis of the topics that concern them.

Bats in the Anthropocene: Conservation of Bats in a Changing World

Bats in the Anthropocene: Conservation of Bats in a Changing World
Title Bats in the Anthropocene: Conservation of Bats in a Changing World PDF eBook
Author Christian C. Voigt
Publisher Springer
Pages 601
Release 2015-12-07
Genre Nature
ISBN 3319252208

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This book focuses on central themes related to the conservation of bats. It details their response to land-use change and management practices, intensified urbanization and roost disturbance and loss. Increasing interactions between humans and bats as a result of hunting, disease relationships, occupation of human dwellings, and conflict over fruit crops are explored in depth. Finally, contributors highlight the roles that taxonomy, conservation networks and conservation psychology have to play in conserving this imperilled but vital taxon. With over 1300 species, bats are the second largest order of mammals, yet as the Anthropocene dawns, bat populations around the world are in decline. Greater understanding of the anthropogenic drivers of this decline and exploration of possible mitigation measures are urgently needed if we are to retain global bat diversity in the coming decades. This book brings together teams of international experts to provide a global review of current understanding and recommend directions for future research and mitigation.

Hedges

Hedges
Title Hedges PDF eBook
Author Robert Wolton
Publisher Bloomsbury Publishing
Pages 401
Release 2024-02-29
Genre Nature
ISBN 1399411748

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An absorbing celebration of the ecology, biology and cultural history of the rich hedgerow heritage in the British Isles. Much of the UK is intensively farmed, and in such landscapes hedges are often the only refuge for wildlife. In addition to providing shelter, protection and food for animals, they also connect and bind together the patches of habitat that do remain, as well as playing vital roles in soil conservation and flood prevention – in short, they are vital for nature's recovery. In Hedges, Robert Wolton brings together decades of research, while also incorporating personal experiences from his farm in Devon, to explore the ecology, nature conservation and wider environmental values of our hedges. From improving water quality and producing wood fuel as a renewable energy source to the use of hedges in boosting crop pollination, this engaging and authoritative book will help to inspire people to value and look after the remarkably rich hedgerow heritage we have in the British Isles. Containing more than 300 photographs and figures, this latest addition to the British Wildlife Collection is a comprehensive commentary on hedges and our relationship with them.

Farmland Conservation

Farmland Conservation
Title Farmland Conservation PDF eBook
Author Lynn V. Dicks
Publisher Pelagic Publishing Ltd
Pages 636
Release 2014-04-07
Genre Nature
ISBN 1907807950

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This synopsis covers evidence for the effects of conservation interventions for native farmland wildlife. It is restricted to evidence captured on the website www.conservationevidence.com. It includes papers published in the journal Conservation Evidence, evidence summarized on our database and systematic reviews collated by the Collaboration for Environmental Evidence. It is the thrid volume in the series Synopses of Conservation Evidence. Evidence was collected from all European countries west of Russia, but not those south of France, Switzerland, Austria, Hungary and Romania. A list of interventions to conserve wildlife on farmland was developed collaboratively by a team of thirteen experts. A number of interventions that are not currently agri-environment options were added during this process, such as ‘Provide nest boxes for bees (solitary or bumblebees)’ and ‘Implement food labelling schemes relating to biodiversity-friendly farming’. Interventions relating to the creation or management of habitats not considered commercial farmland (such as lowland heath, salt marsh and farm woodland) were removed. The list of interventions was organized into categories based on the International Union for the Conservation of Nature (IUCN) classifications of direct threats and conservation actions. Interventions that fall under the threat category ‘Agriculture’ are grouped by farming system, with separate sections for interventions that apply to arable or livestock farms, or across all farming types.

The Bat House Builder's Handbook

The Bat House Builder's Handbook
Title The Bat House Builder's Handbook PDF eBook
Author Merlin D. Tuttle
Publisher University of Texas Press
Pages 36
Release 2005-03-01
Genre Nature
ISBN 9780974237916

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Since 1994, this handbook has been the definitive source for bat house information. This new edition updates the original bat house plans and includes a new "rocket box" design, along with mounting suggestions, tips for experimentation, and more.

Ecological Diversity and Its Measurement

Ecological Diversity and Its Measurement
Title Ecological Diversity and Its Measurement PDF eBook
Author Anne E. Magurran
Publisher Springer Science & Business Media
Pages 180
Release 2013-04-17
Genre Science
ISBN 9401573581

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Although diversity is one of the central themes of ecology there is considerable disagreement ab out how it should be measured. I first encountered this problem 10 ycars ago whcn I started my research career and spent a long time pouring ovcr the literature in order to find the most useful techniques. The intervening decade has seen a further increasc in the number ofpapers devoted to the topic of ecological diversity but has led to no consensus on how it should be measured. My aim in writing this book is therefore to provide a practical guide to ecological diversity and its measurement. In a quantitative subject such as the measurement of diversity it is inevitable that some mathematics are involved, but at all times these are kept as simple as possible, and the emphasis is constantly on ecological reality and practical application. I hope that others ente ring thc fascinating ficld of ecological diversity will find it hclpful. This book grew out of my work in The School of Biological and Environmental Studies at the New University ofUlster, Coleraine, Northern Ircland. I am indebted to all the ecologists there for pro vi ding a stimulating atmosphere. Foremost among these were Amyan Macfadyen and Palmer Newbould. A number of the figures and tables in the book are based on data collected in Northern Irish woodlands.