Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands
Abstract. This study investigates the effects of human disturbance and environmental factors on the distribution of alien plant species on the Georgia Sea Islands (GSI), USA. We sampled the absolute cover of native and alien plant species on two tourist islands (St. Simons Island and Jekyll Island)...
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crwiley:10.1046/j.1472-4642.2003.00036.x 2024-06-02T08:13:46+00:00 Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands Rodgers, J. C. Parker, K. C. 2003 http://dx.doi.org/10.1046/j.1472-4642.2003.00036.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1472-4642.2003.00036.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1472-4642.2003.00036.x en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Diversity and Distributions volume 9, issue 5, page 385-398 ISSN 1366-9516 1472-4642 journal-article 2003 crwiley https://doi.org/10.1046/j.1472-4642.2003.00036.x 2024-05-03T11:47:51Z Abstract. This study investigates the effects of human disturbance and environmental factors on the distribution of alien plant species on the Georgia Sea Islands (GSI), USA. We sampled the absolute cover of native and alien plant species on two tourist islands (St. Simons Island and Jekyll Island) and on two protected National Wildlife Refuge Islands (Blackbeard Island and Wassaw Island). On each island, vegetation composition and environmental variables (soil properties and salt spray) were measured in two habitats that differed substantially in their degree of environmental stress, the more exposed primary dune and the more sheltered and inland maritime forest. Sites were further stratified within each habitat into areas that had different levels of human disturbance. Many alien species were present on all islands and the absolute cover of alien species was not significantly different among islands even though they varied substantially in their degree of accessibility and overall land use. Alien plant cover was appreciably greater in severely disturbed sites than in less disturbed sites on all islands and within both habitats. However, the difference between disturbance categories was much less pronounced in the primary dunes where human disturbance agents do not mitigate the harsh environmental conditions of this habitat (salt spray and saline soils). Alien plant abundance on the GSI is evidently more dependent upon the availability of disturbed ground than the degree of accessibility or overall island development. It appears that human disturbance increases alien cover in general, but in environments where the stress levels are not mitigated, human disturbance does little to foster alien invasions. Article in Journal/Newspaper Refuge Islands Wiley Online Library Refuge Islands ENVELOPE(-67.166,-67.166,-68.350,-68.350) Simons Island ENVELOPE(-102.401,-102.401,60.550,60.550) Diversity and Distributions 9 5 385 398 |
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English |
description |
Abstract. This study investigates the effects of human disturbance and environmental factors on the distribution of alien plant species on the Georgia Sea Islands (GSI), USA. We sampled the absolute cover of native and alien plant species on two tourist islands (St. Simons Island and Jekyll Island) and on two protected National Wildlife Refuge Islands (Blackbeard Island and Wassaw Island). On each island, vegetation composition and environmental variables (soil properties and salt spray) were measured in two habitats that differed substantially in their degree of environmental stress, the more exposed primary dune and the more sheltered and inland maritime forest. Sites were further stratified within each habitat into areas that had different levels of human disturbance. Many alien species were present on all islands and the absolute cover of alien species was not significantly different among islands even though they varied substantially in their degree of accessibility and overall land use. Alien plant cover was appreciably greater in severely disturbed sites than in less disturbed sites on all islands and within both habitats. However, the difference between disturbance categories was much less pronounced in the primary dunes where human disturbance agents do not mitigate the harsh environmental conditions of this habitat (salt spray and saline soils). Alien plant abundance on the GSI is evidently more dependent upon the availability of disturbed ground than the degree of accessibility or overall island development. It appears that human disturbance increases alien cover in general, but in environments where the stress levels are not mitigated, human disturbance does little to foster alien invasions. |
format |
Article in Journal/Newspaper |
author |
Rodgers, J. C. Parker, K. C. |
spellingShingle |
Rodgers, J. C. Parker, K. C. Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands |
author_facet |
Rodgers, J. C. Parker, K. C. |
author_sort |
Rodgers, J. C. |
title |
Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands |
title_short |
Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands |
title_full |
Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands |
title_fullStr |
Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands |
title_full_unstemmed |
Distribution of alien plant species in relation to human disturbance on the Georgia Sea Islands |
title_sort |
distribution of alien plant species in relation to human disturbance on the georgia sea islands |
publisher |
Wiley |
publishDate |
2003 |
url |
http://dx.doi.org/10.1046/j.1472-4642.2003.00036.x https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1046%2Fj.1472-4642.2003.00036.x https://onlinelibrary.wiley.com/doi/pdf/10.1046/j.1472-4642.2003.00036.x |
long_lat |
ENVELOPE(-67.166,-67.166,-68.350,-68.350) ENVELOPE(-102.401,-102.401,60.550,60.550) |
geographic |
Refuge Islands Simons Island |
geographic_facet |
Refuge Islands Simons Island |
genre |
Refuge Islands |
genre_facet |
Refuge Islands |
op_source |
Diversity and Distributions volume 9, issue 5, page 385-398 ISSN 1366-9516 1472-4642 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1046/j.1472-4642.2003.00036.x |
container_title |
Diversity and Distributions |
container_volume |
9 |
container_issue |
5 |
container_start_page |
385 |
op_container_end_page |
398 |
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1800737380723851264 |