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Biogeography of polychaete worms (Annelida) of the world
Marine Ecology Progress Series ( IF 2.2 ) Pub Date : 2021-01-07 , DOI: 10.3354/meps13531
J Pamungkas 1, 2 , CJ Glasby 3 , MJ Costello 4, 5
Affiliation  

ABSTRACT: The global biogeography of polychaete worms has never been assessed previously. In the present study, we studied the world distribution patterns of polychaetes based on datasets obtained from the Global Biodiversity Information Facility, the Ocean Biogeographic Information System and our recently published checklist of Indonesian polychaete species. Polychaete biogeographic regions were visualized using ‘Infomap Bioregions’, and the latitudinal species richness gradient of the animals was examined using 3 metrics, i.e. alpha, gamma and estimated species richness (the last metric was adjusted for sampling bias). We identified 11 major polychaete biogeographic regions. The North Atlantic, Australia and Indonesia were the top 3 species-rich biogeographic regions in the world. The total number of polychaete species was higher in the southern hemisphere (~2100 species, 67 families) than in the northern hemisphere (~1800 species, 75 families) despite significantly more data in the latter (>500000 records compared to >26000 records). Contrary to the classical idea of a unimodal distribution pattern, the latitudinal gradient of polychaetes was generally bimodal with a pronounced dip north of the Equator (15°N). We suggest that the slightly higher peak of species richness in the southern (30°S) than in the northern (60°N) hemisphere reflects higher southern endemicities. These patterns are unlikely to be due to sampling bias but rather represent a natural phenomenon, and we found them most significantly correlated with sea temperature.

中文翻译:

世界多毛蠕虫(Annelida)的生物地理学

摘要:以前从未对多毛蠕虫的全球生物地理学进行过评估。在本研究中,我们基于从全球生物多样性信息基金,海洋生物地理信息系统和我们最近发布的印度尼西亚多毛species物种清单获得的数据集,研究了多毛cha的世界分布格局。使用“ Infomap Bioregions”可视化多皮动物的生物地理区域,并使用3个度量标准(即alpha,γ和估计的物种丰富度)检查动物的纬度物种丰富度梯度(最后一个度量标准针对抽样偏差进行了调整)。我们确定了11个主要的多毛类生物地理区域。北大西洋,澳大利亚和印度尼西亚是世界上物种分布最丰富的3个地区。尽管南半球的多毛类物种总数(〜2100种,67个科)比北半球(〜1800种,75个科)要高,尽管后者的数据要多得多(> 500000条记录,而> 26000条记录) 。与经典的单峰分布模式相反,多毛cha的纬度梯度通常是双峰的,在赤道以北(15°N)有明显的倾角。我们建议,南部(30°S)的物种丰富度峰值比北部(60°N)的半球略高,反映了南部地方特有度较高。这些模式不太可能是由于采样偏差引起的,而是代表自然现象,我们发现它们与海水温度最显着相关。尽管北半球的数据要多得多(> 500000条记录,而> 26000条记录),但比北半球(约1800个物种,75个科)要多。与单峰分布模式的经典思想相反,多毛cha的纬度梯度通常是双峰的,在赤道以北(15°N)有明显的倾角。我们建议,南部(30°S)的物种丰富度峰值比北部(60°N)的半球略高,反映了南部地方特有度较高。这些模式不太可能是由于采样偏差引起的,而是代表自然现象,我们发现它们与海水温度最显着相关。尽管北半球的数据要多得多(> 500000条记录,而> 26000条记录),但比北半球(约1800个物种,75个科)要多。与经典的单峰分布模式相反,多毛cha的纬度梯度通常是双峰的,在赤道以北(15°N)有明显的倾角。我们建议,南部(30°S)的物种丰富度峰值比北部(60°N)的半球略高,反映了南部地方特有度较高。这些模式不太可能是由于采样偏差引起的,而是代表自然现象,我们发现它们与海水温度最显着相关。与经典的单峰分布模式相反,多毛cha的纬度梯度通常是双峰的,在赤道以北(15°N)有明显的倾角。我们建议,南部(30°S)的物种丰富度峰值比北部(60°N)的半球略高,反映了南部地方特有度较高。这些模式不太可能是由于采样偏差引起的,而是代表自然现象,我们发现它们与海水温度最显着相关。与经典的单峰分布模式相反,多毛cha的纬度梯度通常是双峰的,在赤道以北(15°N)有明显的倾角。我们建议,南部(30°S)的物种丰富度峰值比北部(60°N)的半球略高,反映了南部地方特有度较高。这些模式不太可能是由于采样偏差引起的,而是代表自然现象,我们发现它们与海水温度最显着相关。
更新日期:2021-01-07
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