Zooplankton diversity and dispersal by birds; Insights from different geographical scales
Given the major ecological and evolutionary role of dispersal abilities for organisms, as well as the current interest in species’ potential for further migration and colonization as a result of climatic changes or human-mediated invasions, our knowledge about dispersal abilities on spatial and temp...
Published in: | Frontiers in Ecology and Evolution |
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Online Access: | http://hdl.handle.net/11250/2590811 https://doi.org/10.3389/fevo.2019.00074 |
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ftninstnf:oai:brage.nina.no:11250/2590811 2023-05-15T18:29:47+02:00 Zooplankton diversity and dispersal by birds; Insights from different geographical scales Hessen, Dag O. Jensen, Thomas C. Walseng, Bjørn Norway, Svalbard 2019 application/pdf http://hdl.handle.net/11250/2590811 https://doi.org/10.3389/fevo.2019.00074 eng eng Norges forskningsråd: 227024 urn:issn:2296-701X http://hdl.handle.net/11250/2590811 https://doi.org/10.3389/fevo.2019.00074 cristin:1686270 Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2019 Hessen, Jensen and Walseng CC-BY Frontiers in Ecology and Evolution birds dispersal lakes ponds sorting microcrustacean zooplankton VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Peer reviewed 2019 ftninstnf https://doi.org/10.3389/fevo.2019.00074 2021-12-23T07:17:02Z Given the major ecological and evolutionary role of dispersal abilities for organisms, as well as the current interest in species’ potential for further migration and colonization as a result of climatic changes or human-mediated invasions, our knowledge about dispersal abilities on spatial and temporal scales in many taxa is surprisingly limited. Zooplankton inhabit lakes and ponds that functionally are “aquatic islands” in the landscape, and both community composition and richness depend on their ability to disperse, and their post-dispersal colonization abilities. We here assess the diversity and dispersal of freshwater microcrustaceans based on three types of data; (1) > 2000 lakes on mainland Norway spanning a wide range in longitude, latitude and altitude, (2) a more limited number of ponds at Svalbard that are differently affected by migrating birds, and (3) immigration and colonization of recently constructed wetlands and man-made ponds. At all scales we discuss whether observed patterns in diversity can be explicitly linked to birds as vectors, or if confounding factors such as climate, productivity, age of locality—or other means of immigration, precludes conclusive evidence. The spatial patterns of zooplankton distribution strongly suggest that local sorting is a major determinant of richness and community composition. This sorting may not necessarily lead to similar community composition (the “quorum effect”) however. Despite the fact that rapid colonization occurs at local scales, and that birds undoubtedly can transmit animals or resting stages, their role in modulating community structure and richness is still an unsettled issue due to the many confounding parameters. The fact that birds often play a dual role in shaping diversity and community composition, first by direct dispersal, and secondly via affecting post-dispersal species sorting by changing water quality and productivity, is an important aspect of zoochory. Direct experimental evidence (colonization with and without bird exclusion), or genetic analysis of zooplankton species along migration routes, would however be the only ways to establish firm evidence for this case of zoochory. Text Svalbard Norwegian Institute for Nature Research: Brage NINA Norway Svalbard Frontiers in Ecology and Evolution 7 |
institution |
Open Polar |
collection |
Norwegian Institute for Nature Research: Brage NINA |
op_collection_id |
ftninstnf |
language |
English |
topic |
birds dispersal lakes ponds sorting microcrustacean zooplankton VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
spellingShingle |
birds dispersal lakes ponds sorting microcrustacean zooplankton VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 Hessen, Dag O. Jensen, Thomas C. Walseng, Bjørn Zooplankton diversity and dispersal by birds; Insights from different geographical scales |
topic_facet |
birds dispersal lakes ponds sorting microcrustacean zooplankton VDP::Matematikk og Naturvitenskap: 400::Zoologiske og botaniske fag: 480 |
description |
Given the major ecological and evolutionary role of dispersal abilities for organisms, as well as the current interest in species’ potential for further migration and colonization as a result of climatic changes or human-mediated invasions, our knowledge about dispersal abilities on spatial and temporal scales in many taxa is surprisingly limited. Zooplankton inhabit lakes and ponds that functionally are “aquatic islands” in the landscape, and both community composition and richness depend on their ability to disperse, and their post-dispersal colonization abilities. We here assess the diversity and dispersal of freshwater microcrustaceans based on three types of data; (1) > 2000 lakes on mainland Norway spanning a wide range in longitude, latitude and altitude, (2) a more limited number of ponds at Svalbard that are differently affected by migrating birds, and (3) immigration and colonization of recently constructed wetlands and man-made ponds. At all scales we discuss whether observed patterns in diversity can be explicitly linked to birds as vectors, or if confounding factors such as climate, productivity, age of locality—or other means of immigration, precludes conclusive evidence. The spatial patterns of zooplankton distribution strongly suggest that local sorting is a major determinant of richness and community composition. This sorting may not necessarily lead to similar community composition (the “quorum effect”) however. Despite the fact that rapid colonization occurs at local scales, and that birds undoubtedly can transmit animals or resting stages, their role in modulating community structure and richness is still an unsettled issue due to the many confounding parameters. The fact that birds often play a dual role in shaping diversity and community composition, first by direct dispersal, and secondly via affecting post-dispersal species sorting by changing water quality and productivity, is an important aspect of zoochory. Direct experimental evidence (colonization with and without bird exclusion), or genetic analysis of zooplankton species along migration routes, would however be the only ways to establish firm evidence for this case of zoochory. |
format |
Text |
author |
Hessen, Dag O. Jensen, Thomas C. Walseng, Bjørn |
author_facet |
Hessen, Dag O. Jensen, Thomas C. Walseng, Bjørn |
author_sort |
Hessen, Dag O. |
title |
Zooplankton diversity and dispersal by birds; Insights from different geographical scales |
title_short |
Zooplankton diversity and dispersal by birds; Insights from different geographical scales |
title_full |
Zooplankton diversity and dispersal by birds; Insights from different geographical scales |
title_fullStr |
Zooplankton diversity and dispersal by birds; Insights from different geographical scales |
title_full_unstemmed |
Zooplankton diversity and dispersal by birds; Insights from different geographical scales |
title_sort |
zooplankton diversity and dispersal by birds; insights from different geographical scales |
publishDate |
2019 |
url |
http://hdl.handle.net/11250/2590811 https://doi.org/10.3389/fevo.2019.00074 |
op_coverage |
Norway, Svalbard |
geographic |
Norway Svalbard |
geographic_facet |
Norway Svalbard |
genre |
Svalbard |
genre_facet |
Svalbard |
op_source |
Frontiers in Ecology and Evolution |
op_relation |
Norges forskningsråd: 227024 urn:issn:2296-701X http://hdl.handle.net/11250/2590811 https://doi.org/10.3389/fevo.2019.00074 cristin:1686270 |
op_rights |
Navngivelse 4.0 Internasjonal http://creativecommons.org/licenses/by/4.0/deed.no © 2019 Hessen, Jensen and Walseng |
op_rightsnorm |
CC-BY |
op_doi |
https://doi.org/10.3389/fevo.2019.00074 |
container_title |
Frontiers in Ecology and Evolution |
container_volume |
7 |
_version_ |
1766213167321448448 |