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231226s2023 xx |||||o 00| ||eng c |
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|a 10.1111/cobi.14063
|2 doi
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|a pubmed25n1173.xml
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|a (NLM)36704892
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|a DE-627
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|e rakwb
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|a eng
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| 100 |
1 |
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|a Coddington, Charles P J
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Effects of forest fragmentation on avian breeding activity
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|c 2023
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
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|2 rdacarrier
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|a Date Completed 31.07.2023
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|a Date Revised 01.08.2023
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a © 2023 The Authors. Conservation Biology published by Wiley Periodicals LLC on behalf of Society for Conservation Biology.
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|a Biodiversity declines and ecosystem decay follow forest fragmentation; initially, abundant species may become rare or be extirpated. Underlying mechanisms behind delayed extirpation of certain species following forest fragmentation are unknown. Species declines may be attributed to an inadequate number of breeding adults required to replace the population or decreased juvenile survival rate due to reduced recruitment or increased nest predation pressures. We used 10 years of avian banding data, 5 years before and 4 years after fragment isolation, from the Biological Dynamics of Forest Fragments Project, carried out near Manaus, Brazil, to investigate the breeding activity hypothesis that there is less breeding activity and fewer young after relative to before fragment isolation. We compared the capture rates of active breeding and young birds in 3 forest types (primary forest, fragment before isolation, and fragment after isolation) and the proportion of active breeding and young birds with all birds in each unique fragment type before and after isolation. We grouped all bird species by diet (insectivore or frugivore) and nesting strategy (open cup, cavity, or enclosed) to allow further comparisons among forest types. We found support for the breeding activity hypothesis in insectivorous and frugivorous birds (effect sizes 0.45 and 0.53, respectively) and in birds with open-cup and enclosed nesting strategies (effect sizes 0.56 and 0.44, respectively) such that on average there were more breeding birds in fragments before isolation relative to after isolation. A larger proportion of birds in the community were actively breeding before fragment isolation (72%) than after fragment isolation (11%). Unexpectedly, there was no significant decrease in the number of young birds after fragment isolation, although sample sizes for young were small (n = 43). This may have been due to sustained immigration of young birds to fragments after isolation. Together, our results provide some of the strongest evidence to date that avian breeding activity decreases in response to fragment isolation, which could be a fundamental mechanism contributing to ecosystem decay
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4 |
|a Journal Article
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| 650 |
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4 |
|a Research Support, Non-U.S. Gov't
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| 650 |
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4 |
|a Proyecto Dinámica Biológica de Fragmentos de Bosque
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| 650 |
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4 |
|a aves
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| 650 |
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4 |
|a biological dynamics of forest fragments project
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| 650 |
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4 |
|a bird
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| 650 |
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4 |
|a breeding
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| 650 |
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4 |
|a crianza
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| 650 |
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4 |
|a deterioro del ecosistema
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| 650 |
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4 |
|a ecosystem decay
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| 650 |
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4 |
|a forest fragmentation
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| 650 |
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4 |
|a fragmentación del bosque
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| 650 |
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4 |
|a reproducción
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| 650 |
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4 |
|a reproduction
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| 650 |
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4 |
|a 森林破碎化生物动态项目
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| 650 |
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4 |
|a 生态系统衰退
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| 650 |
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4 |
|a 生殖
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| 650 |
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4 |
|a 繁殖
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| 650 |
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4 |
|a 鸟类
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| 700 |
1 |
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|a Cooper, W Justin
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Luther, David A
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Conservation biology : the journal of the Society for Conservation Biology
|d 1989
|g 37(2023), 4 vom: 15. Aug., Seite e14063
|w (DE-627)NLM098176803
|x 1523-1739
|7 nnas
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| 773 |
1 |
8 |
|g volume:37
|g year:2023
|g number:4
|g day:15
|g month:08
|g pages:e14063
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| 856 |
4 |
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|u http://dx.doi.org/10.1111/cobi.14063
|3 Volltext
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