Community-level birth rate: a missing link between ecology, evolution and diversity
(2006) In Oikos 113(1). p.185-191- Abstract
- We propose a conceptual model to explain the variation in species richness in local communities and in build-up of regional species pools over time. The idea is that the opportunity for new species to enter a community (its invasibility) determines the present richness of that community as well as the long-term build-up of a species pool by speciation and migration. We propose that a community's invasibility is determined by the turnover rate of reproductive genets in the community, which we call the 'community-level birth rate'. The faster the turn-over, the more species will accumulate per unit time and per unit community size (number of genets) at a given per-birth rate of immigration and speciation. Spatially discrete communities... (More)
- We propose a conceptual model to explain the variation in species richness in local communities and in build-up of regional species pools over time. The idea is that the opportunity for new species to enter a community (its invasibility) determines the present richness of that community as well as the long-term build-up of a species pool by speciation and migration. We propose that a community's invasibility is determined by the turnover rate of reproductive genets in the community, which we call the 'community-level birth rate'. The faster the turn-over, the more species will accumulate per unit time and per unit community size (number of genets) at a given per-birth rate of immigration and speciation. Spatially discrete communities inhabiting similar environments sum up to metacommunities, whose inhabitant species constitute the regional species pool. We propose that the size of a regional species pool is determined by the aggregate community-level birth rate, the size of the metacommunity through time and age of the metacommunity. Thus, the novel contribution is our proposal of a direct effect of local environment on the build-up rate of species pools. The relative importance of immigrating species and neospecies originating locally will change with the temporal and spatial scale under consideration. We propose that the diversification rate specific to evolutionary lineages and the build-up rate of species pools are two sides of the same coin, and that they are both depending on mean generation time. The proposed model offers a reconciliation of two contrasting paradigms in current community ecology, viz. one focussing on present-time ecological processes and one focussing on historical events governing the size of species pools which in turn determines local richness (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/155264
- author
- Bruun, Hans Henrik LU and Ejrnæs, Rasmus
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Oikos
- volume
- 113
- issue
- 1
- pages
- 185 - 191
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000235418400018
- scopus:33645121069
- ISSN
- 1600-0706
- DOI
- 10.1111/j.0030-1299.2001.14174.x
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Plant Ecology and Systematics (Closed 2011) (011004000)
- id
- 0f8876de-ceda-4033-b9d3-e9243ac24830 (old id 155264)
- date added to LUP
- 2016-04-01 11:43:37
- date last changed
- 2023-04-25 15:03:39
@article{0f8876de-ceda-4033-b9d3-e9243ac24830,
abstract = {{We propose a conceptual model to explain the variation in species richness in local communities and in build-up of regional species pools over time. The idea is that the opportunity for new species to enter a community (its invasibility) determines the present richness of that community as well as the long-term build-up of a species pool by speciation and migration. We propose that a community's invasibility is determined by the turnover rate of reproductive genets in the community, which we call the 'community-level birth rate'. The faster the turn-over, the more species will accumulate per unit time and per unit community size (number of genets) at a given per-birth rate of immigration and speciation. Spatially discrete communities inhabiting similar environments sum up to metacommunities, whose inhabitant species constitute the regional species pool. We propose that the size of a regional species pool is determined by the aggregate community-level birth rate, the size of the metacommunity through time and age of the metacommunity. Thus, the novel contribution is our proposal of a direct effect of local environment on the build-up rate of species pools. The relative importance of immigrating species and neospecies originating locally will change with the temporal and spatial scale under consideration. We propose that the diversification rate specific to evolutionary lineages and the build-up rate of species pools are two sides of the same coin, and that they are both depending on mean generation time. The proposed model offers a reconciliation of two contrasting paradigms in current community ecology, viz. one focussing on present-time ecological processes and one focussing on historical events governing the size of species pools which in turn determines local richness}},
author = {{Bruun, Hans Henrik and Ejrnæs, Rasmus}},
issn = {{1600-0706}},
language = {{eng}},
number = {{1}},
pages = {{185--191}},
publisher = {{Wiley-Blackwell}},
series = {{Oikos}},
title = {{Community-level birth rate: a missing link between ecology, evolution and diversity}},
url = {{https://lup.lub.lu.se/search/files/2613703/625383.pdf}},
doi = {{10.1111/j.0030-1299.2001.14174.x}},
volume = {{113}},
year = {{2006}},
}