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  • 1
    Online Resource
    Online Resource
    Experimental evaluation of herbicide use on biodiversity, ecosystem services and timber production trade‐offs in forest plantations
    Wiley ; 2022
    In:  Journal of Applied Ecology Vol. 59, No. 1 ( 2022-01), p. 52-66
    Details
    In: Journal of Applied Ecology, Wiley, Vol. 59, No. 1 ( 2022-01), p. 52-66
    Abstract: The value of non‐commodity ecosystem services provided by forests is widely recognized, but intensive forest management practices are increasing, with uncertain consequences for a multitude of these services. Quantitative relationships among biodiversity conservation, timber production and other ecosystem services remain poorly understood, especially during the early‐successional period of intensively managed forestlands. We manipulated management intensity in regenerating forest plantations to test the prediction that treatments aimed at maximizing timber production decrease biodiversity conservation and non‐timber services. We measured species richness of 3 taxonomic groups and 13 proxies for provisioning, cultural and regulating services within stands randomly assigned to one of the three herbicide application intensities or an untreated control. Herbicides increased allocation of net primary production to crop trees, increasing projected timber volume and revenues at 40‐ and 60‐year harvest ages. Commonly used herbicide prescriptions reduced culturally valued plants by 71%, wild‐ungulate forage by 41%, avian richness by 20% and pollinator floral resources by 42%, the latter being associated with 38% fewer pollinator species. However, agriculturally valued bumblebees, pollination of blueberries, avian‐mediated arthropod control, wild ungulate observations and regulation services tied to forest productivity appeared unaffected by increasing management intensity and timber production. Species richness and flora‐provided services in young forest plantations exhibited strong trade‐offs with projected timber production, whereas post‐treatment vegetation regeneration and site‐level variation likely maintained a range of other services. Although vegetation recovery is important for supporting wildlife and some ecosystem services on industrial forestlands, it is unlikely that any single prescription can optimize both timber and non‐timber benefits to society across managed forest landscapes. Instead, producing different services in discrete portions of the landscape may be necessary. Synthesis and applications . We tested the effects of intensive forest management via herbicides on ecosystem services and found that biodiversity responses and services from early‐successional vegetation trade‐off against timber production. A number of services appeared to be compatible with timber production, although no single prescription optimized the full range of services. Stand‐level biodiversity conservation and a variety of services could potentially be provided by treatment skips and less‐intensive management on productive sites, although it is unlikely that all services can be optimized without landscape‐level planning.
    Type of Medium: Online Resource
    ISSN: 0021-8901 , 1365-2664
    URL: Issue
    URL: Article
    DOI: 10.1111/jpe.v59.1
    DOI: 10.1111/1365-2664.13936
    Language: English
    Publisher: Wiley
    Publication Date: 2022
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    detail.hit.zdb_id: 410405-5
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  • 2
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    Corticosterone in territorial male Swainson’s Thrushes varies in relation to forest age but not vegetation cover
    Springer Science and Business Media LLC ; 2014
    In:  Journal of Ornithology Vol. 155, No. 2 ( 2014-04), p. 539-548
    Details
    In: Journal of Ornithology, Springer Science and Business Media LLC, Vol. 155, No. 2 ( 2014-04), p. 539-548
    Type of Medium: Online Resource
    ISSN: 2193-7192 , 2193-7206
    URL: Article
    DOI: 10.1007/s10336-013-1037-1
    Language: English
    Publisher: Springer Science and Business Media LLC
    Publication Date: 2014
    detail.hit.zdb_id: 2134595-8
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  • 3
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    Synergistic effects of climate and land‐use change influence broad‐scale avian population declines
    Wiley ; 2019
    In:  Global Change Biology Vol. 25, No. 5 ( 2019-05), p. 1561-1575
    Details
    In: Global Change Biology, Wiley, Vol. 25, No. 5 ( 2019-05), p. 1561-1575
    Abstract: Climate and land‐use changes are expected to be the primary drivers of future global biodiversity loss. Although theory suggests that these factors impact species synergistically, past studies have either focused on only one in isolation or have substituted space for time, which often results in confounding between drivers. Tests of synergistic effects require congruent time series on animal populations, climate change and land‐use change replicated across landscapes that span the gradient of correlations between the drivers of change. Using a unique time series of high‐resolution climate (measured as temperature and precipitation) and land‐use change (measured as forest change) data, we show that these drivers of global change act synergistically to influence forest bird population declines over 29 years in the Pacific Northwest of the United States. Nearly half of the species examined had declined over this time. Populations declined most in response to loss of early seral and mature forest, with responses to loss of early seral forest amplified in landscapes that had warmed over time. In addition, birds declined more in response to loss of mature forest in areas that had dried over time. Climate change did not appear to impact populations in landscapes with limited habitat loss, except when those landscapes were initially warmer than the average landscape. Our results provide some of the first empirical evidence of synergistic effects of climate and land‐use change on animal population dynamics, suggesting accelerated loss of biodiversity in areas under pressure from multiple global change drivers. Furthermore, our findings suggest strong spatial variability in the impacts of climate change and highlight the need for future studies to evaluate multiple drivers simultaneously to avoid potential misattribution of effects.
    Type of Medium: Online Resource
    ISSN: 1354-1013 , 1365-2486
    URL: Issue
    URL: Article
    DOI: 10.1111/gcb.2019.25.issue-5
    DOI: 10.1111/gcb.14571
    Language: English
    Publisher: Wiley
    Publication Date: 2019
    detail.hit.zdb_id: 2020313-5
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  • 4
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    Fragmentation effects on an endangered species across a gradient from the interior to edge of its range
    Wiley ; 2023
    In:  Conservation Biology Vol. 37, No. 5 ( 2023-10)
    Details
    In: Conservation Biology, Wiley, Vol. 37, No. 5 ( 2023-10)
    Abstract: 【摘要】了解栖息地破碎化对单一物种的影响是十分复杂的, 因为量化物种特异的栖息地及物种分布区内破碎化影响的空间变异性仍具有挑战。本研究整理了濒危的斑海雀 ( Brachyramphus marmoratus ) 29 年的繁殖调查数据, 这些数据来自整个太平洋西北地区(美国俄勒冈州、华盛顿州和加利福尼亚州北部)超过 42000 个森林位点。我们建立了一个物种分布模型, 将该物种分布位点与Landsat图像整合, 以量化斑海雀特异的栖息地范围, 并利用占域模型检验了以下假设:栖息地破碎化会对斑海雀繁殖区的分布产生负面影响, 且这些影响会沿海洋觅食栖息地向巢域范围边缘放大。我们发现, 自 1988 年以来, 太平洋西北地区的斑海雀栖息地减少了20%, 而栖息地边缘的比例却增加了 17%, 这表明破碎化程度增加。此外, 在景观尺度上(调查站点 2 公里范围内), 栖息地破碎化对斑海雀潜在繁殖地利用情况产生了负面影响, 且这些影响在分布区边缘被放大了。在海岸附近, 边缘栖息地(即破碎化栖息地)每增加 10%, 斑海雀占域率会下降 37% (95% 置信区间为 12‐54%), 但在分布区边缘(内陆88公里)占域率下降则高达 99% (95% 置信区间为 98‐99%) 。相反地, 局部边缘栖息地(调查站点100米范围内)每增加 10%, 斑海雀的占域率就会增加 31% (95% 置信区间为 14‐52%) 。斑海雀回避大尺度破碎化的栖息地, 但会利用质量下降的局部破碎化栖息地, 这可能是其种群没有得到恢复的原因。此外, 我们的研究结果强调, 破碎化的影响可能是细微、尺度依赖且存在地理差异的。意识到这些细微差别对于为经历大尺度栖息地丧失和破碎化的物种制定景观尺度的保护策略至关重要。 【翻译:胡怡思;审校:聂永刚】
    Type of Medium: Online Resource
    ISSN: 0888-8892 , 1523-1739
    URL: Issue
    URL: Article
    DOI: 10.1111/cobi.v37.5
    DOI: 10.1111/cobi.14091
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2020041-9
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  • 5
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    Bee diversity decreases rapidly with time since harvest in intensively managed conifer forests
    Wiley ; 2023
    In:  Ecological Applications Vol. 33, No. 5 ( 2023-07)
    Details
    In: Ecological Applications, Wiley, Vol. 33, No. 5 ( 2023-07)
    Abstract: Despite widespread concerns about the anthropogenic drivers of global pollinator declines, little information is available about the impacts of land management practices on wild bees outside of agricultural systems, including in forests managed intensively for wood production. We assessed changes in wild bee communities with time since harvest in 60 intensively managed Douglas‐fir ( Pseudotsuga menziesii ) stands across a gradient in stand ages spanning a typical harvest rotation. We measured bee abundance, species richness, and alpha and beta diversity, as well as habitat characteristics (i.e., floral resources, nesting substrates, understory vegetation, and early seral forest in the surrounding landscape) during the spring and summer of 2018 and 2019. We found that bee abundance and species richness declined rapidly with stand age, decreasing by 61% and 48%, respectively, for every 5 years since timber harvest. Asymptotic estimates of Shannon and Simpson diversity were highest in stands 6–10 years post‐harvest and lowest after the forest canopy had closed, ~11 years post‐harvest. Bee communities in older stands were nested subsets of bee communities found in younger stands, indicating that changes were due to species loss rather than turnover as the stands aged. Bee abundance—but not species richness—was positively associated with floral resource density, and neither metric was associated with floral richness. The amount of early seral forest in the surrounding landscape seemed to enhance bee species richness in older, closed‐canopy stands, but otherwise had little effect. Changes in the relative abundance of bee species did not relate to bee functional characteristics such as sociality, diet breadth, or nesting substrate. Our study demonstrates that Douglas‐fir plantations develop diverse communities of wild bees shortly after harvest, but those communities erode rapidly over time as forest canopies close. Therefore, stand‐scale management activities that prolong the precanopy closure period and enhance floral resources during the initial stage of stand regeneration will provide the greatest opportunity to enhance bee diversity in landscapes dominated by intensively managed conifer forests.
    Type of Medium: Online Resource
    ISSN: 1051-0761 , 1939-5582
    URL: Issue
    URL: Article
    DOI: 10.1002/eap.v33.5
    DOI: 10.1002/eap.2855
    Language: English
    Publisher: Wiley
    Publication Date: 2023
    detail.hit.zdb_id: 2010123-5
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  • 6
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    Herbicides Exert Weak and Variable Effects on Microclimate in Early-Seral Forests
    Northwest Scientific Association ; 2018
    In:  Northwest Science Vol. 92, No. 2 ( 2018-05), p. 107-118
    Details
    In: Northwest Science, Northwest Scientific Association, Vol. 92, No. 2 ( 2018-05), p. 107-118
    Type of Medium: Online Resource
    ISSN: 0029-344X , 2161-9859
    URL: Article
    DOI: 10.3955/046.092.0204
    Language: English
    Publisher: Northwest Scientific Association
    Publication Date: 2018
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  • 7
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    Squeezed by a habitat split: Warm ocean conditions and old‐forest loss interact to reduce long‐term occupancy of a threatened seabird
    Wiley ; 2020
    In:  Conservation Letters Vol. 13, No. 5 ( 2020-09)
    Details
    In: Conservation Letters, Wiley, Vol. 13, No. 5 ( 2020-09)
    Abstract: Theory predicts that species requiring multiple habitat types simultaneously should have heightened sensitivity to anthropogenic pressures, yet tests of this prediction are especially rare. We tested whether breeding site occupancy of the threatened marbled murrelet ( Brachyramphus marmoratus ) was driven by the synergistic effects of nesting habitat loss in forests, and changing ocean conditions. We paired 70,700 murrelet surveys at 19,837 sites across 20 years from the Oregon Coast Range with annual data on the extent of old forest and biophysical ocean conditions. Dynamic occupancy models indicated that local murrelet colonization rates were strongly reduced during warm ocean conditions with low prey availability. Landscapes that contained more old forest and were closer to the ocean showed reduced rates of local extinction. Given predictions of accelerated ocean warming and increased global timber demand, our results suggest murrelets may continue to be imperiled by deterioration of the two habitats upon which they depend.
    Type of Medium: Online Resource
    ISSN: 1755-263X , 1755-263X
    URL: Issue
    URL: Article
    DOI: 10.1111/conl.v13.5
    DOI: 10.1111/conl.12745
    Language: English
    Publisher: Wiley
    Publication Date: 2020
    detail.hit.zdb_id: 2430375-6
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  • 8
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    Wild bee diversity is enhanced by experimental removal of timber harvest residue within intensively managed conifer forest
    Wiley ; 2018
    In:  GCB Bioenergy Vol. 10, No. 10 ( 2018-10), p. 766-781
    Details
    In: GCB Bioenergy, Wiley, Vol. 10, No. 10 ( 2018-10), p. 766-781
    Abstract: The use of timber harvest residue as an energy source is thought to have environmental benefits relative to food‐based crops, yet the ecological impact of this practice remains largely unknown. We assessed whether the abundance and diversity of wild bees (Apoidea) were influenced by the removal of harvest residue and associated soil compaction within managed conifer forest in western Oregon, USA. We sampled bees over two years (2014–2015) on study plots that were subjected to five treatments representing gradients in removal of harvest residue and soil compaction. We collected 〉 7,500 bee specimens from 92 distinct species/morphospecies that represented five of the seven bee families. We trapped 3x more individuals in the second year of the study despite identical sampling effort in both years, with most trapped bees classified as ground‐nesting species. Members of the sweat bee family (Halictidae) comprised more than half of all specimens, and the most abundant genus was composed of metallic green bees ( Agapostemon , 33.6%), followed by long‐horned bees ( Melissodes , 16.5%), sweat bees ( Halictus , 15.9%), and bumble bees ( Bombus , 13.6%). In both years, abundance and observed species richness were greatest in the most intensive harvest residue treatment, with other treatments having similar values for both measures. Our study indicates that early successional managed conifer forest that has experienced removal of harvest residue can harbor a surprising diversity of wild bees, which are likely to have important contributions to the broader ecological community through the pollination services they provide.
    Type of Medium: Online Resource
    ISSN: 1757-1693 , 1757-1707
    URL: Issue
    URL: Article
    DOI: 10.1111/gcbb.2018.10.issue-10
    DOI: 10.1111/gcbb.12531
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2495051-8
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  • 9
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    Marine habitat use and movement in response to ocean warming by a threatened forest-nesting seabird
    Elsevier BV ; 2024
    In:  Global Ecology and Conservation Vol. 50 ( 2024-04), p. e02857-
    Details
    In: Global Ecology and Conservation, Elsevier BV, Vol. 50 ( 2024-04), p. e02857-
    Type of Medium: Online Resource
    ISSN: 2351-9894
    URL: Article
    DOI: 10.1016/j.gecco.2024.e02857
    Language: English
    Publisher: Elsevier BV
    Publication Date: 2024
    detail.hit.zdb_id: 2814786-8
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  • 10
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    Parental Alarm Calls of the White-Crowned Sparrow Fail to Stimulate Corticosterone Production in Nest-Bound Offspring : Parental Alarm Calls and Offspring Corticosterone
    Wiley ; 2011
    In:  Ethology Vol. 117, No. 5 ( 2011-05), p. 374-384
    Details
    In: Ethology, Wiley, Vol. 117, No. 5 ( 2011-05), p. 374-384
    Type of Medium: Online Resource
    ISSN: 0179-1613
    URL: Issue
    URL: Article
    DOI: 10.1111/eth.2011.117.issue-5
    DOI: 10.1111/j.1439-0310.2011.01883.x
    RVK:
    WA 15000
    Language: English
    Publisher: Wiley
    Publication Date: 2011
    detail.hit.zdb_id: 2020221-0
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    SSG: 5,2
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