Multi-Scale Influences of Climate, River Hydrology and Temperature, and Management Activities on Recruitment of a Periodic Fish Species (Golden Perch Macquaria ambigua)

IF 2.1 3区 环境科学与生态学 Q2 ECOLOGY
Ecohydrology Pub Date : 2025-08-13 DOI:10.1002/eco.70095
Hayden T. Schilling, Andrew J. Brooks, Katherine J. M. Cheshire, David Ryan, Jason D. Thiem, Anthony Townsend, David A. Crook
{"title":"Multi-Scale Influences of Climate, River Hydrology and Temperature, and Management Activities on Recruitment of a Periodic Fish Species (Golden Perch Macquaria ambigua)","authors":"Hayden T. Schilling,&nbsp;Andrew J. Brooks,&nbsp;Katherine J. M. Cheshire,&nbsp;David Ryan,&nbsp;Jason D. Thiem,&nbsp;Anthony Townsend,&nbsp;David A. Crook","doi":"10.1002/eco.70095","DOIUrl":null,"url":null,"abstract":"<p>Fish population dynamics are influenced by intrinsic and environmental drivers across multiple spatial and temporal scales. A thorough understanding of these drivers is essential for maintaining fish recruitment in flow-regulated rivers. In the Murray–Darling Basin (MDB) in Australia, golden perch (<i>Macquaria ambigua</i>) are an iconic species with a life history characterised by irregular, strong recruitment of year classes. In-channel flow pulses and overbank flows are important for spawning and recruitment; however, the drivers of fluctuations in golden perch recruitment have not been sufficiently quantified to allow for full operationalisation into river and fishery management. We used long-term standardised electrofishing data to model relationships between the relative abundance of young-of-the-year (YOY) golden perch with large-scale climate indices, local river hydrology and temperature, and river/fishery management actions. While consistent recruitment was observed in only five rivers, there were strong, positive associations between the abundance of YOY golden perch and two broadscale climatic drivers (Australian Monsoonal Index and total rainfall across the northern MDB). The driver of these relationships is likely to be the effects of climate on local river discharge and temperature. YOY abundance increased with temperature and generally increased with river discharge to an optimum before declining at a very high discharge. We also found positive but variable effects of stocking, suggesting that stocking of fish can augment natural populations but that outcomes are spatially and temporally inconsistent. Our results have the potential to enable proactive management targeted towards supporting the hydrological conditions necessary for self-sustaining golden perch populations.</p>","PeriodicalId":55169,"journal":{"name":"Ecohydrology","volume":"18 5","pages":""},"PeriodicalIF":2.1000,"publicationDate":"2025-08-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/eco.70095","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Ecohydrology","FirstCategoryId":"93","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1002/eco.70095","RegionNum":3,"RegionCategory":"环境科学与生态学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"ECOLOGY","Score":null,"Total":0}
引用次数: 0

Abstract

Fish population dynamics are influenced by intrinsic and environmental drivers across multiple spatial and temporal scales. A thorough understanding of these drivers is essential for maintaining fish recruitment in flow-regulated rivers. In the Murray–Darling Basin (MDB) in Australia, golden perch (Macquaria ambigua) are an iconic species with a life history characterised by irregular, strong recruitment of year classes. In-channel flow pulses and overbank flows are important for spawning and recruitment; however, the drivers of fluctuations in golden perch recruitment have not been sufficiently quantified to allow for full operationalisation into river and fishery management. We used long-term standardised electrofishing data to model relationships between the relative abundance of young-of-the-year (YOY) golden perch with large-scale climate indices, local river hydrology and temperature, and river/fishery management actions. While consistent recruitment was observed in only five rivers, there were strong, positive associations between the abundance of YOY golden perch and two broadscale climatic drivers (Australian Monsoonal Index and total rainfall across the northern MDB). The driver of these relationships is likely to be the effects of climate on local river discharge and temperature. YOY abundance increased with temperature and generally increased with river discharge to an optimum before declining at a very high discharge. We also found positive but variable effects of stocking, suggesting that stocking of fish can augment natural populations but that outcomes are spatially and temporally inconsistent. Our results have the potential to enable proactive management targeted towards supporting the hydrological conditions necessary for self-sustaining golden perch populations.

Abstract Image

气候、河流水文和温度的多尺度影响及管理活动对周期鱼类(金鲈)增收的影响
鱼类种群动态在多个时空尺度上受到内在和环境驱动因素的影响。全面了解这些驱动因素对于在流量调节的河流中维持鱼类补充至关重要。在澳大利亚的墨累-达令盆地(MDB),金鲈鱼(Macquaria ambigua)是一种标志性的物种,其生活史的特点是不规则的,强烈的年度招聘。通道内水流脉冲和河岸水流对产卵和繁殖很重要;然而,金鲈鱼捕捞量波动的驱动因素尚未得到充分量化,无法在河流和渔业管理中全面实施。利用长期标准化电钓数据,建立了大尺度气候指数、当地河流水文和温度、河流/渔业管理行为与young-of- year (YOY)金鲈鱼相对丰度的关系模型。虽然只在五条河流中观察到持续的增加,但在每年金鲈鱼的丰度与两个广泛的气候驱动因素(澳大利亚季风指数和整个MDB北部的总降雨量)之间存在强烈的正相关。这些关系的驱动因素可能是气候对当地河流流量和温度的影响。年丰度随温度升高而增加,总体上随河流流量增加而达到最佳,在非常高的流量下下降。我们还发现了放养的积极但可变的影响,这表明放养鱼类可以增加自然种群,但结果在空间和时间上是不一致的。我们的研究结果有可能使主动管理的目标是支持自我维持的金鲈鱼种群所需的水文条件。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
Ecohydrology
Ecohydrology 环境科学-生态学
CiteScore
5.10
自引率
7.70%
发文量
116
审稿时长
24 months
期刊介绍: Ecohydrology is an international journal publishing original scientific and review papers that aim to improve understanding of processes at the interface between ecology and hydrology and associated applications related to environmental management. Ecohydrology seeks to increase interdisciplinary insights by placing particular emphasis on interactions and associated feedbacks in both space and time between ecological systems and the hydrological cycle. Research contributions are solicited from disciplines focusing on the physical, ecological, biological, biogeochemical, geomorphological, drainage basin, mathematical and methodological aspects of ecohydrology. Research in both terrestrial and aquatic systems is of interest provided it explicitly links ecological systems and the hydrologic cycle; research such as aquatic ecological, channel engineering, or ecological or hydrological modelling is less appropriate for the journal unless it specifically addresses the criteria above. Manuscripts describing individual case studies are of interest in cases where broader insights are discussed beyond site- and species-specific results.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:604180095
Book学术官方微信