Simon J. Verdon, Rhys Makdissi, William F. Mitchell, Rebecca L. Boulton, James Q. Radford
{"title":"为稀有物种保护建模丰度的好处：以100万公顷的多种鸟类为例研究","authors":"Simon J. Verdon, Rhys Makdissi, William F. Mitchell, Rebecca L. Boulton, James Q. Radford","doi":"10.1111/ddi.13956","DOIUrl":null,"url":null,"abstract":"<div>\n \n \n <section>\n \n <h3> Aim</h3>\n \n <p>Many management programs that are based on the needs of rare or threatened species are ineffective because they fail to collect enough data to reliably estimate abundance and map distributions for their target species. Information that does exist for rare species is often based on presence-only data, because it is difficult to collect sufficient data on abundance for such species. We targeted 10 rare bird species that were excluded from a recent study due to insufficient data. For these species, we aimed to (a) collect sufficient abundance data, (b) identify important locations and (c) estimate population sizes.</p>\n </section>\n \n <section>\n \n <h3> Location</h3>\n \n <p>A large reserve system (~1 M-ha) in south-eastern Australia.</p>\n </section>\n \n <section>\n \n <h3> Methods</h3>\n \n <p>We undertook intensive field surveys, using repeat area searches of 660 independent 25-ha sites, totalling 2640 hours of surveys (2-h surveys; two surveys per site). We used N-mixture models to estimate abundance whilst accounting for imperfect detection.</p>\n </section>\n \n <section>\n \n <h3> Results</h3>\n \n <p>This survey effort returned enough high-quality data on nine rare bird species to identify important locations and estimate their population sizes. To illustrate potential applications of mapped important locations, we used our results to assess the likely impact of a planned burn program in part of the study region. We identified planned burns that are likely to have a significant impact on important locations for rare species that may not have otherwise been identified. Populations were generally larger than previously estimated using expert opinion. For example, our population estimate for the threatened Red-lored Whistler (<i>Pachycephala rufogularis</i>) was ~16 times larger than the previous estimate.</p>\n </section>\n \n <section>\n \n <h3> Main Conclusions</h3>\n \n <p>Our results show (a) the benefits of using abundance to identify important locations for rare species, (b) the value of developing bespoke survey methods for estimating abundance of rare species with low detectability and (c) a pathway for the application of mapped important locations in conservation land management.</p>\n </section>\n </div>","PeriodicalId":51018,"journal":{"name":"Diversity and Distributions","volume":"31 1","pages":""},"PeriodicalIF":4.6000,"publicationDate":"2025-01-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1111/ddi.13956","citationCount":"0","resultStr":"{\"title\":\"Benefits of Modelling Abundance for Rare Species Conservation: A Case Study With Multiple Birds Across One Million Hectares\",\"authors\":\"Simon J. 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Benefits of Modelling Abundance for Rare Species Conservation: A Case Study With Multiple Birds Across One Million Hectares
Aim
Many management programs that are based on the needs of rare or threatened species are ineffective because they fail to collect enough data to reliably estimate abundance and map distributions for their target species. Information that does exist for rare species is often based on presence-only data, because it is difficult to collect sufficient data on abundance for such species. We targeted 10 rare bird species that were excluded from a recent study due to insufficient data. For these species, we aimed to (a) collect sufficient abundance data, (b) identify important locations and (c) estimate population sizes.
Location
A large reserve system (~1 M-ha) in south-eastern Australia.
Methods
We undertook intensive field surveys, using repeat area searches of 660 independent 25-ha sites, totalling 2640 hours of surveys (2-h surveys; two surveys per site). We used N-mixture models to estimate abundance whilst accounting for imperfect detection.
Results
This survey effort returned enough high-quality data on nine rare bird species to identify important locations and estimate their population sizes. To illustrate potential applications of mapped important locations, we used our results to assess the likely impact of a planned burn program in part of the study region. We identified planned burns that are likely to have a significant impact on important locations for rare species that may not have otherwise been identified. Populations were generally larger than previously estimated using expert opinion. For example, our population estimate for the threatened Red-lored Whistler (Pachycephala rufogularis) was ~16 times larger than the previous estimate.
Main Conclusions
Our results show (a) the benefits of using abundance to identify important locations for rare species, (b) the value of developing bespoke survey methods for estimating abundance of rare species with low detectability and (c) a pathway for the application of mapped important locations in conservation land management.
期刊介绍：
Diversity and Distributions is a journal of conservation biogeography. We publish papers that deal with the application of biogeographical principles, theories, and analyses (being those concerned with the distributional dynamics of taxa and assemblages) to problems concerning the conservation of biodiversity. We no longer consider papers the sole aim of which is to describe or analyze patterns of biodiversity or to elucidate processes that generate biodiversity.
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