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• 81. [Article] Remote sensing for monitoring regional carbon dynamics associated with land cover and land use change along the Mesoamerican Biological Corridor

  Human activities are causing profound changes to the global environment, yet the potential consequences of these changes on rising atmospheric carbon dioxide and climate change are not well understood. ...

  Citation × Citation Citation Abstract Copy Title: Remote sensing for monitoring regional carbon dynamics associated with land cover and land use change along the Mesoamerican Biological Corridor Author: Hayes, Daniel J., 1974- Human activities are causing profound changes to the global environment, yet the potential consequences of these changes on rising atmospheric carbon dioxide and climate change are not well understood. Improving our understanding of these processes requires an enhanced awareness of how global ecosystems are changing and how these changes affect the global carbon cycle. Tropical ecosystems are considered crucial to the global carbon budget, and more reliable data on the rates and extent of land cover and land use changes in these ecosystems are needed to reduce the uncertainty of global carbon flux estimates. Spatially explicit and repeatable observations from remotely sensed data offer the best opportunity for monitoring the rapid changes taking place over large spatial scales in tropical ecosystems. As an important regional case study among global-wide efforts to understand land cover and land use change and its effects on terrestrial carbon dynamics, the objective of this research was to develop and test models based on high temporal frequency MODIS data for monitoring land cover changes and modeling associated carbon flux over tropical Central America. The first chapter introduces the issue involved with the development of a methodology for scaling observations of changes in tropical forest cover to large areas at high temporal frequency from coarse resolution satellite imagery. The approach for estimating proportional forest cover change as a continuous variable was based on a regression model that relates multi-spectral, multi-temporal MODIS data, transformed to optimize the spectral detection of vegetation changes, to reference change data sets derived from a Landsat data record for an individual study site. Chapter 2 reports on a series of fundamental analyses designed to test and compare the utility of various MODIS data and products for expanding the forest cover change models over multiple study sites and time periods. The study described in Chapter 3 integrates satellite-derived data sets on land cover and land use change with field-based parameters on terrestrial carbon stocks and flux in a simple accounting model to track carbon dynamics associated with these changes. Title: Remote sensing for monitoring regional carbon dynamics associated with land cover and land use change along the Mesoamerican Biological Corridor Author: Hayes, Daniel J., 1974- Human activities are causing profound changes to the global environment, yet the potential consequences of these changes on rising atmospheric carbon dioxide and climate change are not well understood. Improving our understanding of these processes requires an enhanced awareness of how global ecosystems are changing and how these changes affect the global carbon cycle. Tropical ecosystems are considered crucial to the global carbon budget, and more reliable data on the rates and extent of land cover and land use changes in these ecosystems are needed to reduce the uncertainty of global carbon flux estimates. Spatially explicit and repeatable observations from remotely sensed data offer the best opportunity for monitoring the rapid changes taking place over large spatial scales in tropical ecosystems. As an important regional case study among global-wide efforts to understand land cover and land use change and its effects on terrestrial carbon dynamics, the objective of this research was to develop and test models based on high temporal frequency MODIS data for monitoring land cover changes and modeling associated carbon flux over tropical Central America. The first chapter introduces the issue involved with the development of a methodology for scaling observations of changes in tropical forest cover to large areas at high temporal frequency from coarse resolution satellite imagery. The approach for estimating proportional forest cover change as a continuous variable was based on a regression model that relates multi-spectral, multi-temporal MODIS data, transformed to optimize the spectral detection of vegetation changes, to reference change data sets derived from a Landsat data record for an individual study site. Chapter 2 reports on a series of fundamental analyses designed to test and compare the utility of various MODIS data and products for expanding the forest cover change models over multiple study sites and time periods. The study described in Chapter 3 integrates satellite-derived data sets on land cover and land use change with field-based parameters on terrestrial carbon stocks and flux in a simple accounting model to track carbon dynamics associated with these changes. Close

• 82. [Article] Terrestrial lichen and bryophyte communities of the Blue Mountains in Northeast Oregon

  Although terrestrial lichens and bryophytes are common in upland plant communities of the Blue Mountains in northeast Oregon, research on cryptogam communities in this region is wanting. Studies have shown ...

  Citation × Citation Citation Abstract Copy Title: Terrestrial lichen and bryophyte communities of the Blue Mountains in Northeast Oregon Author: Hardman, Amanda Although terrestrial lichens and bryophytes are common in upland plant communities of the Blue Mountains in northeast Oregon, research on cryptogam communities in this region is wanting. Studies have shown that lichens and bryophytes can reduce soil erosion and increase soil fertility in other semiarid habitats of North America. Understanding the particular roles terrestrial lichens and bryophytes play in their ecosystems and how they react to anthropogenic disturbances is part of making sound management decisions. Managers in the Blue Mountains are now dealing with heavy fuel loads in forested habitats that were impacted by mountain pine beetles, western spruce budworm infestations, Douglas fir dwarf mistletoe, and drought from the 1970's into the 1990's. To better understand how cryptogam communities respond to fuels reduction treatments in insect impacted Abies grandis classified forests of the central Blue Mountains, we compared species composition of logged and burned stands to stands that have not been treated in forty years. We found early colonizing species to be much more frequent in treated sites (logged and burned) while later seral species occurred more often in untreated stands. Because untreated stands had more microsite heterogeneity (coarse woody debris as well as bare soils) there was generally a higher diversity of species than in treated sites. A comparison of the composition of cryptogam communities in these degraded forests to 'healthy' stands in the central Blue Mountains is difficult because unaffected stands are scarce and literature on such communities previous to the insect epidemics is lacking. To get a better idea of the potential that exists for terrestrial lichen and bryophyte community composition, this research was expanded to other common upland habitats in the area. In total 53 sites in five different plant community types were investigated (Abies grandis, Pinus ponderosa, Pinus contorta, Poa secunda grasslands, and Artemisia rigida steppe). Lichen and bryophyte composition and environmental characteristics were compared across sites using multivariate analyses. This research has provided some basic information on community composition in upland habitats of the Blue Mountains. Soil characteristics had the strongest correlation to community composition. Habitats with sparsely vegetated, shallow, rocky soils (bunchgrass, Artemisia rigida, Pinus ponderosa) had very different cryptogam presence than those with deep soils covered by coarse woody debris and denser vegetation (Abies grandis and Pinus contorta forests). While investigating dry bunchgrass habitat of the region an unattached form of Grimmia ovalis was found on many sites with shallow soils and sparse vegetation. Although this moss is commonly known on rock in western North America, it has not yet been reported as unattached in North America. It has, however, been recorded from Africa and Venezuela. Unattached mosses, or moss balls, form when a force, such as frost heaving, cleaves a moss clump from a substrate. That same force, or another, will rotate the clump exposing alternating sides to growth. The formation of moss balls in northeast Oregon are likely created by freeze thaw cycles. More research on their biology and habitat is needed to verify this theory. Title: Terrestrial lichen and bryophyte communities of the Blue Mountains in Northeast Oregon Author: Hardman, Amanda Although terrestrial lichens and bryophytes are common in upland plant communities of the Blue Mountains in northeast Oregon, research on cryptogam communities in this region is wanting. Studies have shown that lichens and bryophytes can reduce soil erosion and increase soil fertility in other semiarid habitats of North America. Understanding the particular roles terrestrial lichens and bryophytes play in their ecosystems and how they react to anthropogenic disturbances is part of making sound management decisions. Managers in the Blue Mountains are now dealing with heavy fuel loads in forested habitats that were impacted by mountain pine beetles, western spruce budworm infestations, Douglas fir dwarf mistletoe, and drought from the 1970's into the 1990's. To better understand how cryptogam communities respond to fuels reduction treatments in insect impacted Abies grandis classified forests of the central Blue Mountains, we compared species composition of logged and burned stands to stands that have not been treated in forty years. We found early colonizing species to be much more frequent in treated sites (logged and burned) while later seral species occurred more often in untreated stands. Because untreated stands had more microsite heterogeneity (coarse woody debris as well as bare soils) there was generally a higher diversity of species than in treated sites. A comparison of the composition of cryptogam communities in these degraded forests to 'healthy' stands in the central Blue Mountains is difficult because unaffected stands are scarce and literature on such communities previous to the insect epidemics is lacking. To get a better idea of the potential that exists for terrestrial lichen and bryophyte community composition, this research was expanded to other common upland habitats in the area. In total 53 sites in five different plant community types were investigated (Abies grandis, Pinus ponderosa, Pinus contorta, Poa secunda grasslands, and Artemisia rigida steppe). Lichen and bryophyte composition and environmental characteristics were compared across sites using multivariate analyses. This research has provided some basic information on community composition in upland habitats of the Blue Mountains. Soil characteristics had the strongest correlation to community composition. Habitats with sparsely vegetated, shallow, rocky soils (bunchgrass, Artemisia rigida, Pinus ponderosa) had very different cryptogam presence than those with deep soils covered by coarse woody debris and denser vegetation (Abies grandis and Pinus contorta forests). While investigating dry bunchgrass habitat of the region an unattached form of Grimmia ovalis was found on many sites with shallow soils and sparse vegetation. Although this moss is commonly known on rock in western North America, it has not yet been reported as unattached in North America. It has, however, been recorded from Africa and Venezuela. Unattached mosses, or moss balls, form when a force, such as frost heaving, cleaves a moss clump from a substrate. That same force, or another, will rotate the clump exposing alternating sides to growth. The formation of moss balls in northeast Oregon are likely created by freeze thaw cycles. More research on their biology and habitat is needed to verify this theory. Close

• 83. [Article] Ethnobotanical investigation of 'wild' food plants used by rice farmers in Kalasin, Northeast Thailand

  This is the publisher’s final pdf. The published article is copyrighted by BioMed Central Ltd. and can be found at: http://www.ethnobiomed.com/.

  Citation × Citation Citation Abstract Copy Title: Ethnobotanical investigation of 'wild' food plants used by rice farmers in Kalasin, Northeast Thailand Author: Cruz-Garcia, Gisella S., Price, Lisa L. This is the publisher’s final pdf. The published article is copyrighted by BioMed Central Ltd. and can be found at: http://www.ethnobiomed.com/. Title: Ethnobotanical investigation of 'wild' food plants used by rice farmers in Kalasin, Northeast Thailand Author: Cruz-Garcia, Gisella S., Price, Lisa L. This is the publisher’s final pdf. The published article is copyrighted by BioMed Central Ltd. and can be found at: http://www.ethnobiomed.com/. Close

• 84. [Article] Managing Ecological Water Requirements for Groundwater-dependent Wetlands on National Forests: A View from the Bottom Up and the Top Down

  Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR.

  Citation × Citation Citation Abstract Copy Title: Managing Ecological Water Requirements for Groundwater-dependent Wetlands on National Forests: A View from the Bottom Up and the Top Down Author: Carroll, Trish, Nevill, Mike, Aldous, Allison, Bach, Leslie, Gurrieri, Joe Year: 2011 Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR. Title: Managing Ecological Water Requirements for Groundwater-dependent Wetlands on National Forests: A View from the Bottom Up and the Top Down Author: Carroll, Trish, Nevill, Mike, Aldous, Allison, Bach, Leslie, Gurrieri, Joe Year: 2011 Presented at The Oregon Water Conference, May 24-25, 2011, Corvallis, OR. Close

• 85. [Article] The Diet of the Galapagos Hawk (Buteo galapagoensis) Before and After Goat Eradication

  This is the publisher’s final pdf. The published article is copyrighted by The Raptor Research Foundation and can be found at: http://www.raptorresearchfoundation.org/publications/journal-of-raptor-res...

  Citation × Citation Citation Abstract Copy Title: The Diet of the Galapagos Hawk (Buteo galapagoensis) Before and After Goat Eradication Author: Vargas, F. Hernán, Jaramillo, Maricruz, Parker, Patricia G., Donaghy-Cannon, Michelle This is the publisher’s final pdf. The published article is copyrighted by The Raptor Research Foundation and can be found at: http://www.raptorresearchfoundation.org/publications/journal-of-raptor-research Title: The Diet of the Galapagos Hawk (Buteo galapagoensis) Before and After Goat Eradication Author: Vargas, F. Hernán, Jaramillo, Maricruz, Parker, Patricia G., Donaghy-Cannon, Michelle This is the publisher’s final pdf. The published article is copyrighted by The Raptor Research Foundation and can be found at: http://www.raptorresearchfoundation.org/publications/journal-of-raptor-research Close

• 86. [Article] Recovery of wild salmonids in western Oregon forests: Oregon Forest Practices Act rules and the measures in the Oregon Plan for Salmon and Watersheds

  This report and addendum was written by the Independent Multidisciplinary Science Team of the Oregon Plan for Salmon and Watersheds

  Citation × Citation Citation Abstract Copy Title: Recovery of wild salmonids in western Oregon forests: Oregon Forest Practices Act rules and the measures in the Oregon Plan for Salmon and Watersheds Author: Independent Multidisciplinary Science Team (Or.) This report and addendum was written by the Independent Multidisciplinary Science Team of the Oregon Plan for Salmon and Watersheds Title: Recovery of wild salmonids in western Oregon forests: Oregon Forest Practices Act rules and the measures in the Oregon Plan for Salmon and Watersheds Author: Independent Multidisciplinary Science Team (Or.) This report and addendum was written by the Independent Multidisciplinary Science Team of the Oregon Plan for Salmon and Watersheds Close

• 87. [Article] A phenological examination of terrestrial invertebrate abundance at H. J. Andrews Experimental Forest, Oregon

  June 2012

  Citation × Citation Citation Abstract Copy Title: A phenological examination of terrestrial invertebrate abundance at H. J. Andrews Experimental Forest, Oregon Author: Mackereth, Kailan F. June 2012 Title: A phenological examination of terrestrial invertebrate abundance at H. J. Andrews Experimental Forest, Oregon Author: Mackereth, Kailan F. June 2012 Close

• 88. [Article] Canopy gaps affect the shape of Douglas-fir crowns in the western Cascades, Oregon

  To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Elsevier ...

  Citation × Citation Citation Abstract Copy Title: Canopy gaps affect the shape of Douglas-fir crowns in the western Cascades, Oregon Author: Puettmann, Klaus, Seidel, Dominik, Ruzicka, Kenneth J. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at: http://www.journals.elsevier.com/forest-ecology-and-management/ Title: Canopy gaps affect the shape of Douglas-fir crowns in the western Cascades, Oregon Author: Puettmann, Klaus, Seidel, Dominik, Ruzicka, Kenneth J. To the best of our knowledge, one or more authors of this paper were federal employees when contributing to this work. This is the publisher’s final pdf. The published article is copyrighted by Elsevier and can be found at: http://www.journals.elsevier.com/forest-ecology-and-management/ Close

• 89. [Article] Market Based Environmental Standards for Sustainable Fisheries

  Research Paper

  Citation × Citation Citation Abstract Copy Title: Market Based Environmental Standards for Sustainable Fisheries Author: Harte, Michael, Swart, Brycen, Sylvia, Gil Research Paper Title: Market Based Environmental Standards for Sustainable Fisheries Author: Harte, Michael, Swart, Brycen, Sylvia, Gil Research Paper Close

• 90. [Article] Extensive CO₂ emissions from shallow coastal waters during passage of Hurricane Irene (August 2011) over the Mid-Atlantic Coast of the U.S.A.

  This is the publisher’s final pdf. The published article is copyrighted by the Association for the Sciences of Limnology and Oceanography, Inc. and can be found at: http://www.aslo.org/lo/.

  Citation × Citation Citation Abstract Copy Title: Extensive CO₂ emissions from shallow coastal waters during passage of Hurricane Irene (August 2011) over the Mid-Atlantic Coast of the U.S.A. Author: Paerl, Hans W., Hales, Burke, Crosswell, Joseph R., Wetz, Michael S. This is the publisher’s final pdf. The published article is copyrighted by the Association for the Sciences of Limnology and Oceanography, Inc. and can be found at: http://www.aslo.org/lo/. Title: Extensive CO₂ emissions from shallow coastal waters during passage of Hurricane Irene (August 2011) over the Mid-Atlantic Coast of the U.S.A. Author: Paerl, Hans W., Hales, Burke, Crosswell, Joseph R., Wetz, Michael S. This is the publisher’s final pdf. The published article is copyrighted by the Association for the Sciences of Limnology and Oceanography, Inc. and can be found at: http://www.aslo.org/lo/. Close