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Historical reconstruction of the Puget Sound (USA) groundfish community
Marine Ecology Progress Series ( IF 2.5 ) Pub Date : 2021-01-07 , DOI: 10.3354/meps13547 T Essington 1 , EJ Ward 2 , TB Francis 3 , C Greene 2 , L Kuehne 1 , D Lowry 4
Marine Ecology Progress Series ( IF 2.5 ) Pub Date : 2021-01-07 , DOI: 10.3354/meps13547 T Essington 1 , EJ Ward 2 , TB Francis 3 , C Greene 2 , L Kuehne 1 , D Lowry 4
Affiliation
ABSTRACT: We examined historical and contemporary trends for a suite of groundfish species in Puget Sound, Washington, USA, to ask how the groundfish community has responded following shifts in fishing regulations, climate, food web, and a growing human population in the surrounding watershed. We used contemporary data (1990-2017) from a standardized annual bottom trawl survey with historical logbook information (1948-1977) from a research vessel. We standardized data to account for spatial and temporal effects on catch rate by first fitting a Bayesian model to the contemporary data, and then using the posterior distributions of the covariates as prior distributions when fitting models to the historical data. We found that most of the 15 species chosen for analysis had highly variable population dynamics within both time periods, and that patterns of variability were similar in the contemporary and historical time period. Surprisingly, there was little evidence of community-wide recovery following regulations that first limited and then banned commercial bottom trawling in the late 1980s to mid-1990s. Spotted ratfish and English sole dominated catches in both time periods, and species that were common in the historical time period were also common in the contemporary time period. The absence of coherent community changes in response to fisheries regulations and other major social and ecological changes may signal the complex dynamics of an urban estuary that is subject to multiple external drivers, and speaks to the need to consider long-term dynamic behavior of populations and communities when establishing ecological indicators.
中文翻译:
普吉特海湾(美国)底层鱼类社区的历史重建
摘要:我们研究了美国华盛顿州普吉特海湾的一系列底层鱼类物种的历史和当代趋势,以询问底层鱼类群体在捕捞法规,气候,食物网以及周围流域人口增长之后的反应。我们使用来自标准化年度底拖网调查的当代数据(1990-2017)和研究船的历史日志信息(1948-1977)。通过首先将贝叶斯模型拟合到当代数据,然后在将模型拟合到历史数据时,使用协变量的后验分布作为先验分布,我们将数据标准化以说明捕获率的时空影响。我们发现,被选择进行分析的15个物种中的大多数在两个时期内的种群动态变化很大,而且可变性的模式在当代和历史时期相似。出乎意料的是,在1980年代末至1990年代中期首先限制并随后禁止商业底拖网捕鱼的法规之后,几乎没有证据表明社区范围内的恢复。在这两个时期中,斑点鱼和英国独占优势的渔获量,在历史时期中常见的物种在当代时期中也很常见。缺乏针对渔业法规和其他重大社会与生态变化的一致社区变化,可能预示着受多个外部驱动因素影响的城市河口的复杂动态,并表明有必要考虑人口和生态系统的长期动态行为。建立生态指标时的社区。
更新日期:2021-01-07
中文翻译:
普吉特海湾(美国)底层鱼类社区的历史重建
摘要:我们研究了美国华盛顿州普吉特海湾的一系列底层鱼类物种的历史和当代趋势,以询问底层鱼类群体在捕捞法规,气候,食物网以及周围流域人口增长之后的反应。我们使用来自标准化年度底拖网调查的当代数据(1990-2017)和研究船的历史日志信息(1948-1977)。通过首先将贝叶斯模型拟合到当代数据,然后在将模型拟合到历史数据时,使用协变量的后验分布作为先验分布,我们将数据标准化以说明捕获率的时空影响。我们发现,被选择进行分析的15个物种中的大多数在两个时期内的种群动态变化很大,而且可变性的模式在当代和历史时期相似。出乎意料的是,在1980年代末至1990年代中期首先限制并随后禁止商业底拖网捕鱼的法规之后,几乎没有证据表明社区范围内的恢复。在这两个时期中,斑点鱼和英国独占优势的渔获量,在历史时期中常见的物种在当代时期中也很常见。缺乏针对渔业法规和其他重大社会与生态变化的一致社区变化,可能预示着受多个外部驱动因素影响的城市河口的复杂动态,并表明有必要考虑人口和生态系统的长期动态行为。建立生态指标时的社区。