LIVIVO - Search results -

Search results

Result 1 - 10 of total 50

Search options

Article ; Online: Conserved patterns of functional organization between cortex and thalamus in mice.

Miller-Hansen, Andrew J / Sherman, S Murray

Proceedings of the National Academy of Sciences of the United States of America

2022 Volume 119, Issue 21, Page(s) e2201481119

Abstract: Higher-order thalamic nuclei contribute to sensory processing via projections to primary and higher cerebral cortical areas, but it is unknown which of their cortical and subcortical inputs contribute to their distinct output pathways. We used ... ...

Abstract	Higher-order thalamic nuclei contribute to sensory processing via projections to primary and higher cerebral cortical areas, but it is unknown which of their cortical and subcortical inputs contribute to their distinct output pathways. We used subpopulation specific viral strategies in mice to anatomically and physiologically dissect pathways of the higher-order thalamic nuclei of the somatosensory and visual systems (the posterior medial nucleus and pulvinar). Employing a complementary optogenetics and electrical stimulation strategy, we show that synapses in cortex from higher-order thalamus have functionally divergent properties in primary vs. higher cortical areas. Higher-order thalamic projections onto excitatory targets in S1 and V1 were weakly modulatory, while projections to S2 and higher visual areas were strong drivers of postsynaptic targets. Then, using transsynaptic tracing verified by optogenetics to map inputs to higher-order thalamus, we show that posterior medial nucleus cells projecting to S1 are driven by neurons in layer 5 of S1, S2, and M1 and that pulvinar cells projecting to V1 are driven by neurons in layer 5 of V1 and higher visual areas. Therefore, in both systems, layer 5 of primary and higher cortical areas drives transthalamic feedback modulation of primary sensory cortex through higher-order thalamus. These results highlight conserved organization that may be shared by other thalamocortical circuitry. They also support the hypothesis that direct corticocortical projections in the brain are paralleled by transthalamic pathways, even in the feedback direction, with feedforward transthalamic pathways acting as drivers, while feedback through thalamus is modulatory.
MeSH term(s)	Animals ; Mice ; Neural Pathways/anatomy & histology ; Neural Pathways/physiology ; Neuroanatomical Tract-Tracing Techniques ; Somatosensory Cortex/anatomy & histology ; Somatosensory Cortex/physiology ; Synapses/physiology ; Thalamic Nuclei/anatomy & histology ; Thalamic Nuclei/physiology
Language	English
Publishing date	2022-05-19
Publishing country	United States
Document type	Journal Article ; Research Support, N.I.H., Extramural
ZDB-ID	209104-5
ISSN	1091-6490 ; 0027-8424
ISSN (online)	1091-6490
ISSN	0027-8424
DOI	10.1073/pnas.2201481119
Database	MEDical Literature Analysis and Retrieval System OnLINE

In stock of ZB MED Cologne/Königswinter

Zs.A 1148: Show issues

Location:
Je nach Verfügbarkeit (siehe Angabe bei Bestand)
bis Jg. 1994: Bestellungen von Artikeln über das Online-Bestellformular
Jg. 1995 - 2021: Lesesall (1.OG)
ab Jg. 2022: Lesesaal (EG)

Order via subito

This service is chargeable due to the Delivery terms set by subito. Orders including an article and supplementary material will be classified as separate orders. In these cases, fees will be demanded for each order.

Details ▾
- See ZB MED holdings
- Order with fees

Article: Climate and water balance change among public, private, and tribal lands within Greater Wild land Ecosystems across North Central USA

Adhikari, Arjun / Hansen, Andrew J

Climatic change. 2019 Mar., v. 152, no. 3-4

2019

Abstract: The remaining wildlands in the North Central US include varying proportions of public, private, and tribal lands across water balance ecotones. These wildlands may be highly vulnerable changing climate impacting their ability to sustain biodiversity and ... ...

Abstract	The remaining wildlands in the North Central US include varying proportions of public, private, and tribal lands across water balance ecotones. These wildlands may be highly vulnerable changing climate impacting their ability to sustain biodiversity and ecosystem functioning. We quantified projected changes in growing season climate (temperature) and water balance (MI: moisture index) in Greater Wildland Ecosystems (GWEs) and land allocation types (public, private, and tribal lands) across Central Plains, Western Plains, and Western Mountains ecoregions of North Central US by using high-resolution climate data from GCM output of 1980–2005 to 2071–2099. We also tested for the evidence of systematic climatic bias on tribal lands, which are often claimed to be distributed non-randomly. We found that the historic temperature was lower for Western Mountains compared to Western and Central Plains’ GWEs. The climate model projected drier and warmer GWEs with a narrow difference in increased temperature (4.6 to 5.5 °C). The MI was projected to have the greatest decrease in Central Plains (− 28%) and the least in Western Plains (− -17%) GWEs. Our findings revealed that the GWEs and land allocation types are increasingly vulnerable to changing climate. We conclude that the distribution of tribal and public lands is not climatically biased in the historic period and the projected rates of change in climate are similar among land allocation types within each GWE. All GWEs, however, are projected to warm and undergo increasing aridity, which may challenge management to sustain ecological health and human wellbeing across all land allocation types.
Keywords	biodiversity ; climate ; climate change ; climate models ; dry environmental conditions ; ecoregions ; ecosystems ; ecotones ; environmental health ; growing season ; meteorological data ; mountains ; public lands ; social welfare ; temperature ; tribal lands ; wildland ; Midwestern United States
Language	English
Dates of publication	2019-03
Size	p. 551-567.
Publishing place	Springer Netherlands
Document type	Article
ZDB-ID	751086-x
ISSN	0165-0009
ISSN	0165-0009
DOI	10.1007/s10584-018-2351-7
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Einzelsign.: Show issues
Z 2010/701: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Evaluating the importance of wolverine habitat predictors using a machine learning method

Carroll, Kathleen A. / Hansen, Andrew J. / Inman, Robert M. / Lawrence, Rick L.

Journal of mammalogy. 2022 Jan. 6, v. 102, no. 6

2022

Abstract: In the conterminous United States, wolverines (Gulo gulo) occupy semi-isolated patches of subalpine habitats at naturally low densities. Determining how to model wolverine habitat, particularly across multiple scales, can contribute greatly to wolverine ... ...

Abstract	In the conterminous United States, wolverines (Gulo gulo) occupy semi-isolated patches of subalpine habitats at naturally low densities. Determining how to model wolverine habitat, particularly across multiple scales, can contribute greatly to wolverine conservation efforts. We used the machine-learning algorithm random forest to determine how a novel analysis approach compared to the existing literature for future wolverine conservation efforts. We also determined how well a small suite of variables explained wolverine habitat use patterns at the second- and third-order selection scale by sex. We found that the importance of habitat covariates differed slightly by sex and selection scales. Snow water equivalent, distance to high-elevation talus, and latitude-adjusted elevation were the driving selective forces for wolverines across the Greater Yellowstone Ecosystem at both selection orders but performed better at the second order. Overall, our results indicate that wolverine habitat selection is, in large part, broadly explained by high-elevation structural features, and this confirms existing data. Our results suggest that for third-order analyses, additional fine-scale habitat data are necessary.
Keywords	Gulo gulo ; algorithms ; artificial intelligence ; ecosystems ; habitat preferences ; habitats ; mammalogy ; talus
Language	English
Dates of publication	2022-0106
Size	p. 1466-1472.
Publishing place	American Society of Mammalogists
Document type	Article
ZDB-ID	218314-6
ISSN	0022-2372
ISSN	0022-2372
DOI	10.1093/jmammal/gyab088
Database	NAL-Catalogue (AGRICOLA)

In stock of ZB MED Bonn / Germany

Z 72/731: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾
- See ZB MED holdings
- Order with fees

Article: Informing conservation decisions to target private lands of highest ecological value and risk of loss

Hansen, Andrew J. / Mullan, Katrina / Theobald, David M. / Robinson, Nathaniel / East, Alyson / Powell, Scott

Ecological applications. 2022 July, v. 32, no. 5

2022

Abstract: Natural habitats on private lands are potentially important components of national biodiversity conservation strategies, yet they are being rapidly lost to development. Conservation easements and other means of protecting these habitats have expanded in ... ...

Abstract	Natural habitats on private lands are potentially important components of national biodiversity conservation strategies, yet they are being rapidly lost to development. Conservation easements and other means of protecting these habitats have expanded in use and will be most effective if they target private lands of highest biodiversity value and risk of loss. We developed a Biodiversity Conservation Priority Index (BCPI) based on ecological value and risk of habitat loss for remaining areas of natural vegetation cover (NVC) in the northwestern United States and addressed two questions: (1) Which remaining NVC on private lands is the highest priority for biodiversity conservation based on ecological value and risk of development? And (2) are conservation easements in NVC placed preferentially in locations of high biodiversity conservation priority? Drawing on the concept of ecological integrity, we integrated five metrics of ecological structure, function, and composition to quantify ecological value of NVC. These included net primary productivity, species richness, ecosystem type representation, imperiled species range rarity, and connectivity among “Greater Wildland Ecosystems.” Risk of habitat loss was derived from analysis of biophysical and sociodemographic predictors of NVC loss. Ecological value and risk of loss were combined into the BCPI. We then analyzed spatial patterns of BCPI to identify the NVC highest in biodiversity conservation priority and examined the relationship between BCPI and conservation easement status. We found that BCPI varied spatially across the study area and was highest in western and southern portions of the study area. High BCPI was associated with suburban and rural development, roads, urban proximity, valley bottom landforms, and low intensity of current development. Existing conservation easements were distributed more towards lower BCPI values than unprotected NVC at both the study area and region scales. The BCPI can be used to better inform land use decision making at local, regional, and potentially national scales in order to better achieve biodiversity goals.
Keywords	biodiversity conservation ; ecological value ; ecosystems ; habitat destruction ; land use ; landforms ; net primary productivity ; right of access ; risk ; rural development ; species richness ; vegetation cover ; wildland
Language	English
Dates of publication	2022-07
Publishing place	John Wiley & Sons, Inc.
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	1074505-1
ISSN	1939-5582 ; 1051-0761
ISSN (online)	1939-5582
ISSN	1051-0761
DOI	10.1002/eap.2612
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 5240: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Trends in vital signs for Greater Yellowstone: application of a Wildland Health Index

Hansen, Andrew J / Linda Phillips

Ecosphere. 2018 Aug., v. 9, no. 8

2018

Abstract: The Earth's remaining tracts of wildlands are being altered by increased human pressure and climate change. Yet, there is no systematic approach for quantifying change in the ecological condition of wildland ecosystems. This paper applies a Wildland ... ...

Abstract	The Earth's remaining tracts of wildlands are being altered by increased human pressure and climate change. Yet, there is no systematic approach for quantifying change in the ecological condition of wildland ecosystems. This paper applies a Wildland Health Index (WHI) to evaluate trends in ecological vital signs in the Greater Yellowstone Ecosystem (GYE). Components of the WHI include criteria for judging ecosystem health, vital signs consistent with these criteria, monitoring at spatial scales relevant to the ecosystem, evaluating trends in condition, and communicating with decision makers. The GYE, while large, intact, and with substantial management capacity, is undergoing increasing human pressure and climate change. Thus, assessment of trends in ecological health is needed to prioritize management. We synthesized current knowledge to evaluate trends in stressors and vital signs of ecosystem function, composition, and structure for 1970 to present and forecasted to 2100. Results were summarized in a WHI Scorecard to illustrate trends in the higher level vital signs of interest to policy makers. We found that human population has doubled, and housing density has tripled in the GYE since 1970 and both are projected to double again by 2050. Human development is now estimated to cover 31% of the GYE. Temperature has warmed 0.8°C since 1950 and is projected to increase 2.5–5.3°C by 2100. These changes in land use and climate have reduced snowpack and stream flows, increased stream temperatures, favored pest outbreaks and forest die‐off, fragmented habitat types, expanded invasive species, and reduced native fish populations. Large mammal populations, in contrast, have been increasing in numbers and expanding in range. These trends differ among land allocation types. The WHI Scorecard rated 6 of 9 vital signs as relatively stable or improving in national parks and designated wilderness. On private lands, in contrast, five vital signs were rated as deteriorating. Confidence in our evaluation is not high because of lack of monitoring across the full GYE. While the National Park Service has a rigorous monitoring program, fewer vital signs are tracked on other federal lands and still fewer on private lands. Thus, trends in ecological condition are not evaluated across the entire GYE nor widely reported in the media. We recommend that the WHI approach be systematically applied across the GYE and other large wildland ecosystems in the United States to better inform management to sustain these wildlands.
Keywords	climate ; climate change ; decision making ; die-off ; ecological function ; ecosystems ; environmental health ; fish communities ; forests ; human development ; human population ; humans ; indigenous species ; invasive species ; issues and policy ; land use ; monitoring ; national parks ; private lands ; public lands ; snowpack ; stream flow ; U.S. National Park Service ; water temperature ; wilderness ; wildland ; United States
Language	English
Dates of publication	2018-08
Size	p. e02380.
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	2572257-8
ISSN	2150-8925
ISSN	2150-8925
DOI	10.1002/ecs2.2380
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article: Land use change and habitat fragmentation of wildland ecosystems of the North Central United States

Adhikari, Arjun / Hansen, Andrew J

Landscape and urban planning. 2018 Sept., v. 177

2018

Abstract: Wildlands and their ability to conserve biodiversity and provide ecosystem services are threatened by unprecedented land use intensification. Effective conservation of these wildlands depends on identifying their ecological boundaries and assessing land ... ...

Abstract	Wildlands and their ability to conserve biodiversity and provide ecosystem services are threatened by unprecedented land use intensification. Effective conservation of these wildlands depends on identifying their ecological boundaries and assessing land use change trajectories and habitat fragmentation within those boundaries. We evaluated the extent of land use intensification and fragmentation of six land cover classes and six ecosystem types within nine greater wildland ecosystems (GWEs) of three ecoregions in the north-central United States. Land use intensification across the ecoregions was characterized by assessing changes in NLCD land cover classes and housing density from 2000 to 2011. We used LANDFIRE BpS data to assess fragmentation effects on ecosystem types. We found relatively similar trends in land use intensification across the region with overall net changes by 1.2%, 1.1%, and 1% for the Central Plains, Western Mountains, and Western Plains, respectively. The study region has retained 58% of the area of original ecosystem types with a decrease of mean core area by −30% during the post-European period. The analysis revealed that some ecosystems either already lost over 70–80% area or are quickly approaching this threshold leading to an additional extinction of species due to land use intensification. This analysis can help managers in identifying sustainable conservation priorities to minimize surrounding land use patterns impacts on protected systems. We conclude that managers are likely to face multiple challenges to maintaining ecosystem conditions in their present or near present states while establishing connectivity with regional networks of protected lands.
Keywords	biodiversity ; ecoregions ; ecosystem services ; ecosystems ; extinction ; habitat fragmentation ; land cover ; land use change ; mountains ; wildland ; Midwestern United States
Language	English
Dates of publication	2018-09
Size	p. 196-216.
Publishing place	Elsevier B.V.
Document type	Article
ZDB-ID	742504-1
ISSN	1872-6062 ; 0169-2046
ISSN (online)	1872-6062
ISSN	0169-2046
DOI	10.1016/j.landurbplan.2018.04.014
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 3119: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Informing conservation decisions to target private lands of highest ecological value and risk of loss.

Hansen, Andrew J / Mullan, Katrina / Theobald, David M / Robinson, Nathaniel / East, Alyson / Powell, Scott

Ecological applications : a publication of the Ecological Society of America

2022 Volume 32, Issue 5, Page(s) e2612

Abstract	Natural habitats on private lands are potentially important components of national biodiversity conservation strategies, yet they are being rapidly lost to development. Conservation easements and other means of protecting these habitats have expanded in use and will be most effective if they target private lands of highest biodiversity value and risk of loss. We developed a Biodiversity Conservation Priority Index (BCPI) based on ecological value and risk of habitat loss for remaining areas of natural vegetation cover (NVC) in the northwestern United States and addressed two questions: (1) Which remaining NVC on private lands is the highest priority for biodiversity conservation based on ecological value and risk of development? And (2) are conservation easements in NVC placed preferentially in locations of high biodiversity conservation priority? Drawing on the concept of ecological integrity, we integrated five metrics of ecological structure, function, and composition to quantify ecological value of NVC. These included net primary productivity, species richness, ecosystem type representation, imperiled species range rarity, and connectivity among "Greater Wildland Ecosystems." Risk of habitat loss was derived from analysis of biophysical and sociodemographic predictors of NVC loss. Ecological value and risk of loss were combined into the BCPI. We then analyzed spatial patterns of BCPI to identify the NVC highest in biodiversity conservation priority and examined the relationship between BCPI and conservation easement status. We found that BCPI varied spatially across the study area and was highest in western and southern portions of the study area. High BCPI was associated with suburban and rural development, roads, urban proximity, valley bottom landforms, and low intensity of current development. Existing conservation easements were distributed more towards lower BCPI values than unprotected NVC at both the study area and region scales. The BCPI can be used to better inform land use decision making at local, regional, and potentially national scales in order to better achieve biodiversity goals.
MeSH term(s)	Biodiversity ; Conservation of Natural Resources ; Data Collection ; Ecosystem ; Northwestern United States
Language	English
Publishing date	2022-05-30
Publishing country	United States
Document type	Journal Article ; Research Support, U.S. Gov't, Non-P.H.S.
ZDB-ID	1074505-1
ISSN	1939-5582 ; 1051-0761
ISSN (online)	1939-5582
ISSN	1051-0761
DOI	10.1002/eap.2612
Database	MEDical Literature Analysis and Retrieval System OnLINE

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 5240: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

Article: Natural vegetation cover on private lands: locations and risk of loss in the northwestern United States

Hansen, Andrew J. / Mullan, Katrina / Theobald, David M. / Powell, Scott / Robinson, Nathaniel / East, Alyson

Ecosphere. 2021 Oct., v. 12, no. 10

2021

Abstract: Although natural habitats are being lost globally, the extent and fate of natural habitats on private lands in the United States have not been quantified at the resolution relevant for conservation planning. Here we provide information on the locations ... ...

Abstract	Although natural habitats are being lost globally, the extent and fate of natural habitats on private lands in the United States have not been quantified at the resolution relevant for conservation planning. Here we provide information on the locations and risk of loss of areas of natural vegetation cover (NVC) on private lands across the northwestern United States to motivate discussion on needs and opportunities to slow their loss. Specific questions were as follows: (1) Where are the remaining areas of NVC on private lands? (2) Which regions and communities have had the highest loss rates of NVC? and (3) In which socioecological settings is NVC at greatest risk of loss? NVC location and change were mapped using two land cover classifications during 2001–2011, the most recent period with available data. Associations between NVC loss and market proximity, demographic, infrastructure, natural amenity, and climate factors were used to model probability of NVC loss in 2011. We found that NVC covered 64% of the study area in 2011. During 2001–2011, 2.5% of the area of NVC in 2001 was converted to development and croplands. Rates of loss were as high as 12% in some regions (e.g., western Washington). Housing development accounted for the majority of this NVC loss, increasing by 8% while croplands increased by 5%. Conversion of NVC for development and crops during 2001–2011 per capita varied 20–40 fold among “city spheres” (urban areas >10,000 people and 40‐min commuting distance). NVC loss was statistically associated with urban fringe development, forest edge vegetation, proximity to highways, public land, and waterbodies and was associated with New West demographic city spheres. Of the NVC on private lands in 2011, 11% was projected to have >20% probability of future loss over the next decade. We conclude that portions of the northwestern United States, one of the last stronghold for extensive natural habitats in the contiguous United States, are rapidly losing NVC to development, particularly in the New West communities that typically have the highest motivation and capacity to conserve them.
Keywords	edge effects ; land cover ; markets ; motivation ; people ; public lands ; risk ; surface water ; vegetation cover
Language	English
Dates of publication	2021-10
Publishing place	John Wiley & Sons, Ltd
Document type	Article
Note	JOURNAL ARTICLE
ZDB-ID	2572257-8
ISSN	2150-8925
ISSN	2150-8925
DOI	10.1002/ecs2.3756
Database	NAL-Catalogue (AGRICOLA)

Order via subito

Article ; Online: A framework for collaborative wolverine connectivity conservation.

Carroll, Kathleen A / Inman, Robert M / Hansen, Andrew J / Lawrence, Rick L / Barnett, Kevin

iScience

2021 Volume 24, Issue 8, Page(s) 102840

Abstract: Maintaining connectivity between high-elevation public lands is important for wolverines and other species of conservation concern. This work represents the first effort to prioritize wolverine connectivity under future climate conditions using a ... ...

Abstract	Maintaining connectivity between high-elevation public lands is important for wolverines and other species of conservation concern. This work represents the first effort to prioritize wolverine connectivity under future climate conditions using a systematic conservation planning framework. We optimized 10, 15, 20, and 50% of habitat features for wolverines using integer linear programming. We identified 369 privately owned areas in the 10% solution, 572 in the 15% solution, 822 in the 20% solution, and 3,996 in the 50% solution where voluntary landowner easements would improve the long-term landscape functionality for wolverine connectivity. The median estimated easements ranged from $8,762 to $12,220 across the four solutions (total costs $14,874,371 to $196,346,714). Overall, this effort demonstrates the utility of optimization problems for conserving connectivity, provides a proactive tool to engage potential collaborators, identifies easements that will likely protect various subalpine species, and offers a framework for the conservation of additional species.
Language	English
Publishing date	2021-07-10
Publishing country	United States
Document type	Journal Article
ISSN	2589-0042
ISSN (online)	2589-0042
DOI	10.1016/j.isci.2021.102840
Database	MEDical Literature Analysis and Retrieval System OnLINE

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Article: Is whitebark pine less sensitive to climate warming when climate tolerances of juveniles are considered?

Hansen, Andrew J / East, Alyson / Keane, Robert E / Lavin, Matt / Legg, Kristin / Holden, Zachary / Toney, Chris / Alongi, Franklin

Forest ecology and management. 2021 Aug. 01, v. 493

2021

Abstract: Whitebark pine (Pinus albicaulis) (PIAL) is a proposed threatened species that plays a keystone ecological role in the Greater Yellowstone Ecosystem (GYE). Its population response to climate change is of high interest to managers because climate-induced ... ...

Abstract	Whitebark pine (Pinus albicaulis) (PIAL) is a proposed threatened species that plays a keystone ecological role in the Greater Yellowstone Ecosystem (GYE). Its population response to climate change is of high interest to managers because climate-induced declines may adversely affect critical ecosystem services that this species provides. While previous studies of reproductive size classes of the species have projected dramatic reductions in area of suitable habitat under climate warming scenarios, it has been suggested that the species can tolerate warmer and drier conditions if seedlings and saplings are not competitively excluded by other conifer species. Thus, we asked if juvenile-sized PIAL are found in warmer and drier locations than larger individuals, under the assumption that competitive exclusion would require several years to decades to influence the distribution of regenerating PIAL. We used a new genetic technique to distinguish non-cone bearing PIAL from the more warm-dry tolerant limber pine (P. flexilis) among samples collected along transects extending from lower treeline to the subalpine around the GYE. Predictor data on climate and water balance were obtained from a 250-m spatially explicit data product. We used a stochastic gradient boosting model to predict probability of presence of PIAL < 1 cm dbh (diameter at breast height) and >=1 cm dbh as a function of these predictors. We discovered that smaller diameter PIAL were not proportionally more abundant at lower elevations, suggesting that competitive exclusion may not be the primary mechanism limiting this species' low elevation distribution. In contrast, the small size class PIAL were slightly less warm-dry tolerant than larger individuals. This suggests that the zone of regeneration of PIAL has shifted upwards in elevation in recent decades, perhaps associated with the observed warming in the GYE. In comparison to a previous study of reproductive-sized trees (>20 cm dbh) from a coarser (1.6 km) sampling frame, however, the predicted zone of suitable habitat of PIAL (<1 cm dbh) was 122 m lower in elevation. We conclude that consideration of the fine-scale distribution of PIAL near lower treeline suggests that the tree species is slightly less sensitive to climate warming than found by previous studies of reproductive-sized trees, but, nonetheless, large range contractions of PIAL in GYE are likely under projected future climates.
Keywords	Pinus albicaulis ; Pinus flexilis ; administrative management ; altitude ; climatic factors ; competitive exclusion ; conifers ; ecosystems ; forest ecology ; habitats ; probability ; threatened species ; tree and stand measurements ; treeline
Language	English
Dates of publication	2021-0801
Publishing place	Elsevier B.V.
Document type	Article
Note	NAL-AP-2-clean
ZDB-ID	751138-3
ISSN	0378-1127
ISSN	0378-1127
DOI	10.1016/j.foreco.2021.119221
Database	NAL-Catalogue (AGRICOLA)

Full text online

Accessible to users with ZB MED library card

In stock of ZB MED Bonn / Germany

Z 6026: Show issues

Order via subito

Inter-library loan at ZB MED

Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

Details ▾

To top

More links

Kategorien

In stock of ZB MED Cologne/Königswinter

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED

More links

Kategorien

Order via subito

More links

Kategorien

Order via subito

Inter-library loan at ZB MED

Full text online

More links

Kategorien

In stock of ZB MED Bonn / Germany

Order via subito

Inter-library loan at ZB MED