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首页> 外文期刊>Ocean & coastal management >Restoring fish habitat values on a tropical agricultural floodplain: Learning from two decades of aquatic invasive plant maintenance efforts
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Restoring fish habitat values on a tropical agricultural floodplain: Learning from two decades of aquatic invasive plant maintenance efforts

机译：在热带农业泛滥平面上恢复鱼类栖息地值：从两十年的水生侵入式植物维护工作中学习

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摘要

Coastal managers are increasingly challenged with implementing expensive restoration and on-going maintenance programs to reinstate the services and values of floodplains as important fish nursery areas, but access to long-term data to assist with supporting success is lacking. An environmental levy (funded by farmers, Burdekin Shire Council, a local Natural Resource Management group, and Lower Burdekin Water Board) was enacted in 2003 to fund (approximately $20,000/yr AUD) an ongoing aquatic weed removal program (consisting of an aquatic plant weed harvester that removes floating vegetation to a nearby truck for composting in conjunction with boat weed spraying) designed to maintain the delivery of irrigation water as well as promoting productive fish habitat. We repeated a fish and water quality survey first performed in 2001/2002 (September 2017, May 2018) at 10 lagoons (three clear and seven turbid) on the Burdekin floodplain (north Queensland, Australia) to examine whether these maintenance efforts continue delivering the initial values set nearly 20 years ago. A total of 2267 fish from 24 species were caught, May 2018 (post-wet season) survey yielded more fish (24 species) than the September 2017 (late dry season) survey (19 species) which is close to the results of the 2001/02 survey (post-wet season, 17 species; late dry season, 16 species). A Hydrolab (September 2017) revealed that turbid and clear water lagoons had a similar rhythmic diel temperature cycle that posed no thermal risks to fish. Dissolved oxygen had distinct diel periodicity, with clear lagoons having the widest range, reaching established critical minimum thresholds for some floodplain fish, while turbid lagoons were generally less variable (presumably due to less oxygen demand from biological activity). While as long as sugarcane production occurs, excessive nutrients will necessitate continuance of the aquatic weed program; therefore, the funding model in place must remain. This study advocates the need for long-term maintenance programs facilitated by long-term partnerships, and serves as an exemplar model for managers looking to restore coastal floodplains but are challenged with persistent aquatic weed management issues, not only in Australia but also on floodplains elsewhere.
机译：沿海经理越来越受到实施昂贵的恢复和持续的维护计划，以恢复洪水作为重要的鱼苗地区的洪泛区的服务和价值，但缺乏访问长期数据来协助支持成功。 2003年颁布了一项环境征税（由农民，Burdekin Shire Sould，当地自然资源管理组和下Burdekin Water Board）的资金（约20,000美元/年AUD）是一个正在进行的水生杂草删除计划（由水生植物组成）杂草收割机将漂浮在附近的卡车中漂浮在附近的卡车中，与船杂草喷涂一起堆肥）旨在保持灌溉水的交付以及促进生产性鱼类栖息地。我们重复了在2001/2002年（2017年9月，2018年5月）在Burdekin Poopplain（澳大利亚北昆士兰）的10个泻湖（三个清晰和七个混乱）上进行的鱼和水质调查，以检查这些维护努力是否继续提供初始值近20年前。捕获了24种物种的2267条鱼，2018年5月（湿期后季节）调查率先（24种），比2017年9月（晚期干旱季节）调查（19种）接近2001年的结果/ 02调查（湿期季节，17种;晚期干燥季，16种）。水解（2017年9月）揭示了浑浊和透明的水泻龙具有类似的节奏二极管温度循环，其不会对鱼类产生热风险。溶解的氧具有不同的DIEL周期性，具有较为宽范围的透明滞后，达到某些洪泛生鱼的建立的临界最小阈值，而浑浊的泻龙通常变得较小（可能是由于生物活性较少的氧气需求）。虽然只要甘蔗产生，但过量的营养素将需要水生杂草计划的持续;因此，资金模型必须留下。本研究提倡对长期伙伴关系促进的长期维护计划的需求，并作为寻求恢复沿海洪泛平原的管理者的示例模型，但不仅在澳大利亚的持久性水生杂草管理问题挑战，而且是在其他地方的洪泛平原上受到挑战。

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  • 来源
    《Ocean & coastal management》 |2020年第12期|105355.1-105355.10|共10页
  • 作者

    Waltham Nathan J.; Coleman Laura; Buelow Christina; Fry Scott; Burrows Damien;

  • 作者单位

    James Cook Univ Ctr Trop Water & Aquat Ecosyst Res TropWATER Div Trop Environm & Soc Townsville Qld 4811 Australia;

    James Cook Univ Ctr Trop Water & Aquat Ecosyst Res TropWATER Div Trop Environm & Soc Townsville Qld 4811 Australia|Univ Davis Ctr Watershed Sci Davis CA USA;

    James Cook Univ Ctr Trop Water & Aquat Ecosyst Res TropWATER Div Trop Environm & Soc Townsville Qld 4811 Australia|Griffith Univ Australian Rivers Inst Global Wetlands Gold Coast Campus Gold Coast Qld 4214 Australia;

    Nat Resources Management North Queensland Dry Trop Townsville Qld 4811 Australia;

    James Cook Univ Ctr Trop Water & Aquat Ecosyst Res TropWATER Div Trop Environm & Soc Townsville Qld 4811 Australia;

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  • 原文格式 PDF
  • 正文语种 eng
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  • 关键词

    Floodplains; Wetlands; Fish; Water quality; Turbidity; Aquatic weeds;

    机译：洪泛区;湿地;鱼;水质;浊度;水生杂草;

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