Monitoring populations and threats to range-restricted freshwater fishes: A case study of the Stocky Galaxias (Galaxias tantangara)

IF 1.9 4区 环境科学与生态学 Q3 ECOLOGY
Tyrone H. Lavery, David B. Lindenmayer, Hugh Allan, Darren Southwell, John C. Z. Woinarski, Mark Lintermans
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Abstract

Monitoring is critical for conservation, to track the status of threatened species, assess the relative impacts of threats, inform management responses and prioritise them according to their efficacy. Globally, freshwater fish are impacted by a range of threats including deterioration in water quality, climate change, habitat loss and degradation, introduced predators and herbivores, and wildfire. Monitoring of freshwater fish can be challenging because aquatic conditions can make detecting and identifying population trends difficult for many species. Galaxiidae is the most speciose family of Gondwanan-distributed freshwater fishes, and over 75% of species assessed by the IUCN Red List have been classified as threatened. Many Australian galaxiids are highly imperilled and monitoring effort and adequacy is low. We prepared a detailed monitoring plan for the Stocky Galaxias (Galaxias tantangara) that is representative of the conservation status and level of threat facing many congeneric and other similar species. Our protocol provides details of species biology, pertinent threats, and management options with sampling methods to gather these data, and options to link with management actions for maximum benefit. Improved monitoring linked with threat management should improve the conservation status of Stocky Galaxias. By providing this example, we have sought to improve monitoring for range-restricted freshwater fishes more generally.

Abstract Image

范围受限淡水鱼种群数量监测及其威胁:以矮壮星系(Galaxias tantangara)为例
监测对于保护至关重要,它可以跟踪受威胁物种的状况,评估威胁的相对影响,为管理响应提供信息,并根据其有效性确定优先级。在全球范围内,淡水鱼受到一系列威胁的影响,包括水质恶化、气候变化、栖息地丧失和退化、引入捕食者和食草动物以及野火。对淡水鱼的监测可能具有挑战性,因为水生环境可能使许多物种难以检测和确定种群趋势。银河科是冈瓦纳分布的淡水鱼中种类最多的一个科,世界自然保护联盟红色名录评估的物种中有75%以上被列为受威胁物种。澳大利亚的许多星系都处于高度危险之中,监测的力度和充分性都很低。我们编制了一份详细的监测计划,以代表许多同属和其他类似物种面临的保护状况和威胁程度。我们的协议提供了物种生物学,相关威胁的详细信息,以及收集这些数据的采样方法和管理选项,以及与管理行动相联系的选项,以获得最大的利益。与威胁管理相结合的改进监测应能改善矮壮星系的保护状况。通过提供这个例子,我们力求更广泛地改善对范围有限的淡水鱼的监测。
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来源期刊
Ecological Management & Restoration
Ecological Management & Restoration Environmental Science-Management, Monitoring, Policy and Law
CiteScore
4.20
自引率
0.00%
发文量
0
期刊介绍: Ecological Management & Restoration is a peer-reviewed journal with the dual aims of (i) reporting the latest science to assist ecologically appropriate management and restoration actions and (ii) providing a forum for reporting on these actions. Guided by an editorial board made up of researchers and practitioners, EMR seeks features, topical opinion pieces, research reports, short notes and project summaries applicable to Australasian ecosystems to encourage more regionally-appropriate management. Where relevant, contributions should draw on international science and practice and highlight any relevance to the global challenge of integrating biodiversity conservation in a rapidly changing world. Topic areas: Improved management and restoration of plant communities, fauna and habitat; coastal, marine and riparian zones; restoration ethics and philosophy; planning; monitoring and assessment; policy and legislation; landscape pattern and design; integrated ecosystems management; socio-economic issues and solutions; techniques and methodology; threatened species; genetic issues; indigenous land management; weeds and feral animal control; landscape arts and aesthetics; education and communication; community involvement.
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