Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA
I investigated the experimental effects of manipulations of snowmelt on the flowering phenology and forage chemistry (digestibility and nitrogen concentration) of tussock cottongrass on the Seward Peninsula, Alaska. The early snowmelt treatment (1) accelerated reproductive phenology by 11 days, and...
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ftciteseerx:oai:CiteSeerX.psu:10.1.1.420.1239 2023-05-15T18:19:18+02:00 Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA Merben Rellen Cebrian The Pennsylvania State University CiteSeerX Archives application/pdf http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.1239 http://www.lter.uaf.edu/pdf/1075_Cebrian_2005.pdf en eng http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.1239 http://www.lter.uaf.edu/pdf/1075_Cebrian_2005.pdf Metadata may be used without restrictions as long as the oai identifier remains attached to it. http://www.lter.uaf.edu/pdf/1075_Cebrian_2005.pdf text ftciteseerx 2016-01-08T03:58:23Z I investigated the experimental effects of manipulations of snowmelt on the flowering phenology and forage chemistry (digestibility and nitrogen concentration) of tussock cottongrass on the Seward Peninsula, Alaska. The early snowmelt treatment (1) accelerated reproductive phenology by 11 days, and (2) resulted in higher floral digestibility but is associated with decreased nitrogen concentration in flowers. Therefore, changes in climate that lead to changes in the timing of snowmelt can alter the timing of flowering of E. vaginatum and, consequently, its value as reindeer and caribou forage. I then used relationships between forage chemistry and body weight gain of caribou derived from White (1983) to model the possible effects of altered forage chemistry on food intake and growth in reindeer. Reindeer foraging on cottongrass flowers can potentially increase their intake of digestible dry matter and therefore energy, by selecting to forage on early-emergent inflorescences over late-emergent ones. The multiplicative effects of forage quality and food intake can result in large increases in the rate of body weight gain that have positive feedbacks on the health and reproductive status of reindeer at both the individual and Text Seward Peninsula Alaska Cottongrass Unknown |
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ftciteseerx |
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English |
description |
I investigated the experimental effects of manipulations of snowmelt on the flowering phenology and forage chemistry (digestibility and nitrogen concentration) of tussock cottongrass on the Seward Peninsula, Alaska. The early snowmelt treatment (1) accelerated reproductive phenology by 11 days, and (2) resulted in higher floral digestibility but is associated with decreased nitrogen concentration in flowers. Therefore, changes in climate that lead to changes in the timing of snowmelt can alter the timing of flowering of E. vaginatum and, consequently, its value as reindeer and caribou forage. I then used relationships between forage chemistry and body weight gain of caribou derived from White (1983) to model the possible effects of altered forage chemistry on food intake and growth in reindeer. Reindeer foraging on cottongrass flowers can potentially increase their intake of digestible dry matter and therefore energy, by selecting to forage on early-emergent inflorescences over late-emergent ones. The multiplicative effects of forage quality and food intake can result in large increases in the rate of body weight gain that have positive feedbacks on the health and reproductive status of reindeer at both the individual and |
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The Pennsylvania State University CiteSeerX Archives |
format |
Text |
author |
Merben Rellen Cebrian |
spellingShingle |
Merben Rellen Cebrian Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA |
author_facet |
Merben Rellen Cebrian |
author_sort |
Merben Rellen Cebrian |
title |
Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA |
title_short |
Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA |
title_full |
Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA |
title_fullStr |
Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA |
title_full_unstemmed |
Date EFFECTS OF SIMULATED CLIMATE CHANGE ON THE REPRODUCTIVE PHENOLOGY OF TUSSOCK COTTONGRASS: IMPLICATIONS FOR GROWTH AND REPRODUCTION OF REINDEER AND CARIBOU ON THE SEWARD PENINSULA, ALASKA |
title_sort |
date effects of simulated climate change on the reproductive phenology of tussock cottongrass: implications for growth and reproduction of reindeer and caribou on the seward peninsula, alaska |
url |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.1239 http://www.lter.uaf.edu/pdf/1075_Cebrian_2005.pdf |
genre |
Seward Peninsula Alaska Cottongrass |
genre_facet |
Seward Peninsula Alaska Cottongrass |
op_source |
http://www.lter.uaf.edu/pdf/1075_Cebrian_2005.pdf |
op_relation |
http://citeseerx.ist.psu.edu/viewdoc/summary?doi=10.1.1.420.1239 http://www.lter.uaf.edu/pdf/1075_Cebrian_2005.pdf |
op_rights |
Metadata may be used without restrictions as long as the oai identifier remains attached to it. |
_version_ |
1766196377088425984 |