Dispersal of marine benthic invertebrates through ice rafting

被引：17

作者：

Macfarlane, Colin B. A. ^{[1
]}

Drolet, David ^{[1
]}

Barbeau, Myriam A. ^{[2
]}

Hamilton, Diana J. ^{[1
]}

Ollerhead, Jeff ^{[3
]}

机构：

[1] Mt Allison Univ, Dept Biol, Sackville, NB E4L 1G7, Canada

[2] Univ New Brunswick, Dept Biol, Fredericton, NB E3B 5A3, Canada

[3] Mt Allison Univ, Dept Geog & Environm, Sackville, NB E4L 1A7, Canada

来源：

ECOLOGY | 2013年 / 94卷 / 01期

基金：

加拿大自然科学与工程研究理事会;

关键词：

dispersal; invertebrates; meiofauna; movement; rafting; sea ice; LONG-DISTANCE DISPERSAL; GENETIC DIFFERENTIATION; CRYPTIC DIVERSITY; SEDIMENT LOAD; GEMMA-GEMMA; POPULATIONS; DYNAMICS; ESTUARY; SEA; ENVIRONMENT;

D O I：

10.1890/12-1049.1

中图分类号：

Q14 [生态学（生物生态学）];

学科分类号：

071012 ; 0713 ;

摘要：

Knowledge of dispersal vectors used by organisms is essential to the understanding of population and community dynamics. We report on ice rafting, a vector by which intertidal benthic invertebrates can be transported well outside their normal dispersal range during winter in temperate climates. We found multiple invertebrate taxa in sedimentladen ice blocks sampled in the intertidal zone. A large proportion of individuals were alive and active when freed from the ice. Using radio tracking, we found that ice blocks can travel over 20 km within a few days. Given the abundance of highly mobile ice blocks carrying viable invertebrates, we conclude that ice-rafting is likely an important dispersal vector, contributing to spatial community dynamics in intertidal systems. This mechanism helps explain observed genetic structure of populations, but it also raises concerns about potential negative impacts of climate change on connectivity between populations.

引用

页码：250 / 256

页数：7

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