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  • 1
    In: Global Ecology and Biogeography, Wiley, Vol. 28, No. 11 ( 2019-11), p. 1538-1551
    Abstract: Traits are increasingly being used to quantify global biodiversity patterns, with trait databases growing in size and number, across diverse taxa. Despite growing interest in a trait‐based approach to the biodiversity of the deep sea, where the impacts of human activities (including seabed mining) accelerate, there is no single repository for species traits for deep‐sea chemosynthesis‐based ecosystems, including hydrothermal vents. Using an international, collaborative approach, we have compiled the first global‐scale trait database for deep‐sea hydrothermal‐vent fauna – sFDvent ( s Div‐funded trait database for the F unctional D iversity of vent s). We formed a funded working group to select traits appropriate to: (a) capture the performance of vent species and their influence on ecosystem processes, and (b) compare trait‐based diversity in different ecosystems. Forty contributors, representing expertise across most known hydrothermal‐vent systems and taxa, scored species traits using online collaborative tools and shared workspaces. Here, we characterise the sFDvent database, describe our approach, and evaluate its scope. Finally, we compare the sFDvent database to similar databases from shallow‐marine and terrestrial ecosystems to highlight how the sFDvent database can inform cross‐ecosystem comparisons. We also make the sFDvent database publicly available online by assigning a persistent, unique DOI. Main types of variable contained Six hundred and forty‐six vent species names, associated location information (33 regions), and scores for 13 traits (in categories: community structure, generalist/specialist, geographic distribution, habitat use, life history, mobility, species associations, symbiont, and trophic structure). Contributor IDs, certainty scores, and references are also provided. Spatial location and grain Global coverage (grain size: ocean basin), spanning eight ocean basins, including vents on 12 mid‐ocean ridges and 6 back‐arc spreading centres. Time period and grain sFDvent includes information on deep‐sea vent species, and associated taxonomic updates, since they were first discovered in 1977. Time is not recorded. The database will be updated every 5 years. Major taxa and level of measurement Deep‐sea hydrothermal‐vent fauna with species‐level identification present or in progress. Software format .csv and MS Excel (.xlsx).
    Type of Medium: Online Resource
    ISSN: 1466-822X , 1466-8238
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2019
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    detail.hit.zdb_id: 2021283-5
    SSG: 12
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  • 2
    In: Conservation Biology, Wiley, Vol. 36, No. 5 ( 2022-10)
    Abstract: 【摘要】 由于农业用地和气候变化持续对撒哈拉以南非洲地区的生物多样性构成严重威胁, 人们目前正在努力确定未来农业发展和陆地生物多样性保护之间预计有最优利弊权衡的地区。然而, 到目前为止, 很少有研究关注撒哈拉以南非洲地区农业发展背景下的淡水生物多样性保护问题。本研究旨在确定淡水生物多样性最有可能受到富营养化和有害藻华爆发影响(即当藻类繁殖到对人和淡水动物产生毒性影响的程度)的地区, 这些因素是随着气候变化出现的对全球淡水生态系统最重要的威胁。我们利用新型遥感技术, 确定了与高生物多样性和藻华爆发的地区相重叠的湖泊, 并计算了淡水生物物种丰富度和归一化叶绿素指数(NDCI), 以确定加纳、埃塞俄比亚、赞比亚和周边国家应高度优先保护的湖泊。我们根据高生物多样性在有害藻华爆发中的暴露情况, 确定了169个优先保护区域。其中, 赞比亚应优先保护的湖泊数量最多(76%的小湖泊以及大湖泊中5个100平方公里区域)。淡水生物多样性的威胁因素存在于流域尺度, 往往超出了一个国家的政治边界;因此, 需要在流域尺度上进行水资源的合作管理和保护。利用遥感工具来根据藻华爆发风险确定淡水系统的优先保护区域, 对于全球采样不足的偏远地区至关重要, 特别是考虑到快速扩张的农业和气候变化正在对淡水生物多样性的威胁正在日益加剧。 【翻译:胡怡思;审校:聂永刚】
    Type of Medium: Online Resource
    ISSN: 0888-8892 , 1523-1739
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2022
    detail.hit.zdb_id: 2020041-9
    SSG: 12
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  • 3
    In: Diversity and Distributions, Wiley, Vol. 24, No. 5 ( 2018-05), p. 568-578
    Abstract: Rare species typically contribute more to functional diversity than common species. However, humans have altered the occupancy and abundance patterns of many species—the basis upon which we define “rarity.” Here, we use a globally unique dataset from hydrothermal vents—an untouched ecosystem—to test whether rare species over‐contribute to functional diversity. Location Juan de Fuca Ridge hydrothermal vent fields, Northeast Pacific Ocean. Methods We first conduct a comprehensive review to set up expectations for the relative contributions of rare and common species to functional diversity. We then quantify the rarity and commonness of 37 vent species with relevant trait information to assess the relationship between rarity and functional distinctiveness—a measure of the uniqueness of the traits of a species relative to traits of coexisting species. Next, we randomly assemble communities to test whether rare species over‐contribute to functional diversity in artificial assemblages ranging in species richness. Then, we test whether biotic interactions influence functional diversity contributions by comparing the observed contribution of each species to a null expectation. Finally, we identify traits driving functional distinctiveness using a distance‐based redundancy analysis. Results Across functional diversity metrics and species richness levels, we find that both rare and common species can contribute functional uniqueness. Some species always offer unique trait combinations, and these species host bacterial symbionts and provide habitat complexity. Moreover, we find that contributions of species to functional diversity may be influenced by biotic interactions. Main conclusions Our findings show that many common species make persistent, unique contributions to functional diversity. Thus, it is key to consider whether the abundance and occupancy of species have been reduced, relative to historical baselines, when interpreting the contributions of rare species to functional diversity. Our work highlights the importance of testing ecological theory in ecosystems unaffected by human activities for the conservation of biodiversity.
    Type of Medium: Online Resource
    ISSN: 1366-9516 , 1472-4642
    URL: Issue
    Language: English
    Publisher: Wiley
    Publication Date: 2018
    detail.hit.zdb_id: 2020139-4
    detail.hit.zdb_id: 1443181-6
    SSG: 12
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