The density of the Atlantic marsh fiddler crab (Minuca pugnax, Smith, 1870) (Decapoda: Brachyura: Ocypodidae) in its expanded range in the Gulf of Maine, USA
The density of the Atlantic marsh fiddler crab (Minuca pugnax, Smith, 1870) (Decapoda: Brachyura: Ocypodidae) in its expanded range in the Gulf of Maine, USA
复制标题
美国缅因湾大西洋沼泽招潮蟹（Minuca pugnax, Smith, 1870）（十足目：Brachura：Ocypodidae）在其扩展范围内的密度
DOI：
10.1093/jcbiol/ruaa049
复制
发表时间：
2020
影响因子：
1.1
通讯作者：
Johnson, David S
中科院分区：
文献类型：
--
作者：
Martínez-Soto, Kayla S;Johnson, David S
大西洋沼泽招潮蟹，Minuca pugnax，是一种气候移民，最近将其范围向北扩展到缅因州湾。我们跟踪了M。自2014年首次使用洞穴计数发现以来，美国马萨诸塞州东北部大沼泽地区的pugnax种群。由于洞穴数量可能会高估招潮蟹的密度，我们在2019年使用相机陷阱来确定洞穴密度与招潮蟹密度之间的关系。洞穴计数调查显示，M的密度增加了6倍。从2014年到2019年，大沼泽中的pugna。结果表明，扩大范围的招潮蟹种群已经建立并不断增长。根据洞穴计数，M. pugnaxin扩大的范围（6个洞穴m-2）仍然远低于历史范围（高达300个洞穴m-2）。根据相机陷阱，我们确定洞穴计数在2019年高估了招潮蟹密度47%。平均而言，每观察两个洞穴就发现一只螃蟹。这一结果表明，估计密度的M。根据洞穴数量计算的pugnax应该减少一半。Minuca pugnax是一种生态系统工程师，可以影响盐沼功能，这种影响的程度与其密度有关。我们的研究结果表明，种群的M。相对于历史范围内较大的种群，扩大的范围目前对沼泽地的影响较小，但随着种群的增长，其影响将增加。
The Atlantic marsh fiddler crab,Minuca pugnax, is a climate migrant that recently expanded its range northward into the Gulf of Maine. We tracked theM. pugnaxpopulation within the Great Marsh, in northeastern Massachusetts, USA, since it was first detected in 2014 using burrow counts. Because burrow counts can overestimate fiddler-crab density, we used camera traps to determine the relationship between burrow densities and fiddler-crab densities in 2019. The burrow count surveys show a six-fold increase in the density ofM. pugnaxin the Great Marsh from 2014 to 2019. Results indicates that the fiddler-crab population in the expanded range is established and growing. Based on burrow counts, however, the density ofM. pugnaxin the expanded range (6 burrows m–2) remains much lower than those found in the historical range (up to 300 burrows m–2). Based on the camera traps, we determined that burrow counts overestimated fiddler-crab densities by 47% in 2019. There was, on average, one crab detected for every two burrows observed. This result suggests that estimates of densities ofM. pugnaxbased on burrow counts should be reduced by half.Minuca pugnaxis an ecosystem engineer that can influence saltmarsh functioning and the magnitude of that influence is related to its density. Our results imply that the populations ofM. pugnaxin the expanded range are currently having minor impacts on marshes relative to larger populations in the historical range, but their impact will increase as the populations grow.
登录
查看更多内容
本土草蟹引起的盐沼植被丧失是否会改善大西洋泥提琴手（Uca Pugnax）的栖息地适宜性
DOI：
--
发表时间：
2015
期刊：
影响因子：
--
作者：
Stephen M. Smith
通讯作者：
Stephen M. Smith
估算莫桑比克伊纳卡岛萨科红树林招潮蟹 Uca annulipes 种群密度的替代方法比较
影响因子：
2.6
作者：
A. Macia;Ivaldo Quincardete;J. Paula
通讯作者：
J. Paula
洞穴计数作为评估挪威龙虾种群的其他典型方法的替代方法的综述
影响因子：
6.2
作者：
F. Sardá;J. Aguzzi
通讯作者：
J. Aguzzi
气候移民摆脱了寄生虫
影响因子：
2.5
作者：
Johnson, DS;Shields, JD;Doucette, D;Heard, R
通讯作者：
Heard, R
影响因子：
0.4
作者：
Luk, Yi Chuan;Zajac, Roman N.
通讯作者：
Zajac, Roman N.