Spatial patterns of atmospheric pollen dispersal in the Colorado Rocky Mountains, USA. Fall, P. L. Review of Palaeobotany and Palynology, 74(3–4):293–313, 1992. ![Spatial patterns of atmospheric pollen dispersal in the Colorado Rocky Mountains, USA [link]](https://bibbase.org/img/filetypes/link.svg "link")
Paper doi abstract bibtex Atmospheric pollen dispersal in the southern Rocky Mountains was sampled with 18 Tauber traps located between 2470 and 3780 m elevation. A three year study provided data on both pollen frequencies and pollen accumulation (grains cm−2 yr−1) for six distinct vegetation types. Pollen spectra from the shrub steppe below the forest belt is characterized by Artemisia, Gramineae, Compositae, and other non-arboreal pollen taxa. These pollen types are readily carried upslope to higher elevations. Pollen from sub-alpine conifers, Picea and Abies, is not transported far by the wind, and indicates the presence of nearby host trees. Pinus pollen, readily distributed by the wind, is found in all traps, but only exceeds 20% where the trees are present, and in tundra vegetation. While pollen from Pseudotsuga and Populus trees occurs in low frequencies and low influx rates, it is relatively abundant in montane forest stands dominated by these trees. Although pollen grains are transported both upslope and downslope, most pollen transport is upslope. At least 50% of the pollen deposited in alpine tundra, 20% in the sub-alpine forest, and 7% in the montane forest, comes from plants growing at lower elevations. Pollen spectra deposited in steppe vegetation are the least distorted by pollen from plants growing in other vegetation types, and characterize the broad valleys of sagebrush steppe that makes up the regional vegetation. Spectra in alpine tundra are dominated by pollen from plants growing at lower elevations and at long distances from the collection site. In a comparison of paired collectors, Tauber traps with aerodynamically designed lids were more effective in open vegetation where they collected substantially more pollen than traps without the lids. Tauber lids appear to have less effect on pollen accumulation rates in forested stands, probablu due to the filtering of pollen by trees. Annual pollen accumulation rates in west-central Colorado range between 1000 and 5000 grains cm−2 yr−1. Mean rates of modern pollen influx (in grains cm−2 yr−1) are 1100 in alpine tundra, 2700 in the sub-alpine forest, 3400 in montane forest types, and 2200 in the shrub steppe. These pollen accumulation values reported for the mountains of Colorado are comparable to pollen accumulation rates from other localities in the western United States.
@article{fall_spatial_1992,
title = {Spatial patterns of atmospheric pollen dispersal in the {Colorado} {Rocky} {Mountains}, {USA}},
volume = {74},
issn = {0034-6667},
url = {http://www.sciencedirect.com/science/article/pii/0034666792900137},
doi = {10.1016/0034-6667(92)90013-7},
abstract = {Atmospheric pollen dispersal in the southern Rocky Mountains was sampled with 18 Tauber traps located between 2470 and 3780 m elevation. A three year study provided data on both pollen frequencies and pollen accumulation (grains cm−2 yr−1) for six distinct vegetation types. Pollen spectra from the shrub steppe below the forest belt is characterized by Artemisia, Gramineae, Compositae, and other non-arboreal pollen taxa. These pollen types are readily carried upslope to higher elevations. Pollen from sub-alpine conifers, Picea and Abies, is not transported far by the wind, and indicates the presence of nearby host trees. Pinus pollen, readily distributed by the wind, is found in all traps, but only exceeds 20\% where the trees are present, and in tundra vegetation. While pollen from Pseudotsuga and Populus trees occurs in low frequencies and low influx rates, it is relatively abundant in montane forest stands dominated by these trees. Although pollen grains are transported both upslope and downslope, most pollen transport is upslope. At least 50\% of the pollen deposited in alpine tundra, 20\% in the sub-alpine forest, and 7\% in the montane forest, comes from plants growing at lower elevations. Pollen spectra deposited in steppe vegetation are the least distorted by pollen from plants growing in other vegetation types, and characterize the broad valleys of sagebrush steppe that makes up the regional vegetation. Spectra in alpine tundra are dominated by pollen from plants growing at lower elevations and at long distances from the collection site. In a comparison of paired collectors, Tauber traps with aerodynamically designed lids were more effective in open vegetation where they collected substantially more pollen than traps without the lids. Tauber lids appear to have less effect on pollen accumulation rates in forested stands, probablu due to the filtering of pollen by trees. Annual pollen accumulation rates in west-central Colorado range between 1000 and 5000 grains cm−2 yr−1. Mean rates of modern pollen influx (in grains cm−2 yr−1) are 1100 in alpine tundra, 2700 in the sub-alpine forest, 3400 in montane forest types, and 2200 in the shrub steppe. These pollen accumulation values reported for the mountains of Colorado are comparable to pollen accumulation rates from other localities in the western United States.},
number = {3–4},
journal = {Review of Palaeobotany and Palynology},
author = {Fall, Patricia L.},
year = {1992},
pages = {293--313},
}
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Pollen from sub-alpine conifers, Picea and Abies, is not transported far by the wind, and indicates the presence of nearby host trees. Pinus pollen, readily distributed by the wind, is found in all traps, but only exceeds 20% where the trees are present, and in tundra vegetation. While pollen from Pseudotsuga and Populus trees occurs in low frequencies and low influx rates, it is relatively abundant in montane forest stands dominated by these trees. Although pollen grains are transported both upslope and downslope, most pollen transport is upslope. At least 50% of the pollen deposited in alpine tundra, 20% in the sub-alpine forest, and 7% in the montane forest, comes from plants growing at lower elevations. Pollen spectra deposited in steppe vegetation are the least distorted by pollen from plants growing in other vegetation types, and characterize the broad valleys of sagebrush steppe that makes up the regional vegetation. Spectra in alpine tundra are dominated by pollen from plants growing at lower elevations and at long distances from the collection site. In a comparison of paired collectors, Tauber traps with aerodynamically designed lids were more effective in open vegetation where they collected substantially more pollen than traps without the lids. Tauber lids appear to have less effect on pollen accumulation rates in forested stands, probablu due to the filtering of pollen by trees. Annual pollen accumulation rates in west-central Colorado range between 1000 and 5000 grains cm−2 yr−1. Mean rates of modern pollen influx (in grains cm−2 yr−1) are 1100 in alpine tundra, 2700 in the sub-alpine forest, 3400 in montane forest types, and 2200 in the shrub steppe. These pollen accumulation values reported for the mountains of Colorado are comparable to pollen accumulation rates from other localities in the western United States.","number":"3–4","journal":"Review of Palaeobotany and Palynology","author":[{"propositions":[],"lastnames":["Fall"],"firstnames":["Patricia","L."],"suffixes":[]}],"year":"1992","pages":"293–313","bibtex":"@article{fall_spatial_1992,\n\ttitle = {Spatial patterns of atmospheric pollen dispersal in the {Colorado} {Rocky} {Mountains}, {USA}},\n\tvolume = {74},\n\tissn = {0034-6667},\n\turl = {http://www.sciencedirect.com/science/article/pii/0034666792900137},\n\tdoi = {10.1016/0034-6667(92)90013-7},\n\tabstract = {Atmospheric pollen dispersal in the southern Rocky Mountains was sampled with 18 Tauber traps located between 2470 and 3780 m elevation. A three year study provided data on both pollen frequencies and pollen accumulation (grains cm−2 yr−1) for six distinct vegetation types. Pollen spectra from the shrub steppe below the forest belt is characterized by Artemisia, Gramineae, Compositae, and other non-arboreal pollen taxa. These pollen types are readily carried upslope to higher elevations. Pollen from sub-alpine conifers, Picea and Abies, is not transported far by the wind, and indicates the presence of nearby host trees. Pinus pollen, readily distributed by the wind, is found in all traps, but only exceeds 20\\% where the trees are present, and in tundra vegetation. While pollen from Pseudotsuga and Populus trees occurs in low frequencies and low influx rates, it is relatively abundant in montane forest stands dominated by these trees. Although pollen grains are transported both upslope and downslope, most pollen transport is upslope. At least 50\\% of the pollen deposited in alpine tundra, 20\\% in the sub-alpine forest, and 7\\% in the montane forest, comes from plants growing at lower elevations. Pollen spectra deposited in steppe vegetation are the least distorted by pollen from plants growing in other vegetation types, and characterize the broad valleys of sagebrush steppe that makes up the regional vegetation. Spectra in alpine tundra are dominated by pollen from plants growing at lower elevations and at long distances from the collection site. In a comparison of paired collectors, Tauber traps with aerodynamically designed lids were more effective in open vegetation where they collected substantially more pollen than traps without the lids. Tauber lids appear to have less effect on pollen accumulation rates in forested stands, probablu due to the filtering of pollen by trees. Annual pollen accumulation rates in west-central Colorado range between 1000 and 5000 grains cm−2 yr−1. Mean rates of modern pollen influx (in grains cm−2 yr−1) are 1100 in alpine tundra, 2700 in the sub-alpine forest, 3400 in montane forest types, and 2200 in the shrub steppe. These pollen accumulation values reported for the mountains of Colorado are comparable to pollen accumulation rates from other localities in the western United States.},\n\tnumber = {3–4},\n\tjournal = {Review of Palaeobotany and Palynology},\n\tauthor = {Fall, Patricia L.},\n\tyear = {1992},\n\tpages = {293--313},\n}\n\n","author_short":["Fall, P. L."],"key":"fall_spatial_1992","id":"fall_spatial_1992","bibbaseid":"fall-spatialpatternsofatmosphericpollendispersalinthecoloradorockymountainsusa-1992","role":"author","urls":{"Paper":"http://www.sciencedirect.com/science/article/pii/0034666792900137"},"metadata":{"authorlinks":{}},"html":""},"bibtype":"article","biburl":"https://bibbase.org/zotero/phiguera","dataSources":["FoqTuDx9Cxduvwxiv"],"keywords":[],"search_terms":["spatial","patterns","atmospheric","pollen","dispersal","colorado","rocky","mountains","usa","fall"],"title":"Spatial patterns of atmospheric pollen dispersal in the Colorado Rocky Mountains, USA","year":1992}