Space‐for‐time inferences about range‐edge dynamics of tree species can be influenced by sampling biases

2021 ◽  
Author(s):  
Ming Ni ◽  
Mark Vellend
Keyword(s):  
Tree Species ◽  
Range Edge ◽  
Sampling Biases

Space-for-time inferences about range-edge dynamics of tree species can be influenced by sampling biases

2020 ◽  
Author(s):  
Ming Ni ◽  
Mark Vellend
Keyword(s):  
Climate Change ◽  
Tree Species ◽  
Original Data ◽  
Major Influence ◽  
Life Stages ◽  
Environmental Niche ◽  
Adult Trees ◽  
Sampling Biases ◽  
Sampling Procedures ◽  
Number Of Individuals

Differences between the distributions of tree saplings and adults in geographic or niche space have been used to infer climate change effects on tree range dynamics. Previous studies have reported narrower latitudinal or climatic niche ranges of juvenile trees compared to adults, concluding that tree ranges are contracting, contradicting climate-based predictions. However, more comprehensive sampling of adult trees than juvenile trees in most regional forest inventories could potentially bias ontogenetic comparisons. Here we first report spatial simulations showing that reduced sampling intensity can result in underestimates of range and niche limits, but that resampling the same number of individuals of different life stages can eliminate this bias. We then re-analyzed the U.S. Forest Inventory and Analysis data, comparing the range and niche limits between adult trees and saplings of 92 tree species, both using the original data and two re-sampling procedures. Resampling aimed to reduce sampling biases by controlling for either sampling area or the number of individuals sampled. Overall, these resampling procedures had a major influence on the estimation of range limits, most often by reducing, eliminating, or even reversing the tendency in the original analyses for saplings to have broader distributions than adult trees. These results indicate that previous conclusions that the distributions of juvenile trees were contracting in response to climate change were potentially artefacts of sampling in the underlying data. More generally, sampling effects involved in the estimation of geographical ranges and environmental niche widths need to be taken into account in studies comparing different life stages, and also likely in other types of distribution comparisons.

scholarly journals Mycorrhizal strategies of tree species correlate with trailing range edge responses to current and past climate change

Ecology ◽  
2015 ◽  
Vol 96 (6) ◽  
pp. 1451-1458 ◽  
Author(s):  
Richard A. Lankau ◽  
Kai Zhu ◽  
Alejandro Ordonez
Keyword(s):  
Climate Change ◽  
Tree Species ◽  
Past Climate ◽  
Range Edge ◽  
Past Climate Change

Purification of plasma membranes from leaves of conifer and deciduous tree species by phase partitioning and free-flow electrophoresis

1995 ◽  
Vol 95 (3) ◽  
pp. 399-408 ◽  
Author(s):  
Elena Toll ◽  
Federico J. Castillo ◽  
Pierre Crespi ◽  
Michele Crevecoeur ◽  
Hubert Greppin
Keyword(s):  
Tree Species ◽  
Plasma Membranes ◽  
Free Flow ◽  
Deciduous Tree ◽  
Phase Partitioning

A Memory Theoretic Account of Information Search: Effects of Base Rates and Sampling Biases

2009 ◽  
Author(s):  
Nick D. Lange ◽  
Rick P. Thomas ◽  
Michael R. Dougherty
Keyword(s):  
Information Search ◽  
Base Rates ◽  
Sampling Biases

Biscogniauxia (Hypoxylon) Canker or Dieback in Trees

EDIS ◽  
2017 ◽  
Vol 2017 (6) ◽  
Author(s):  
Claudia Paez ◽  
Jason A. Smith
Keyword(s):  
Water Stress ◽  
Tree Species ◽  
Soil Compaction ◽  
Urban Areas ◽  
Root Disease ◽  
Poor Health ◽  
Green Spaces ◽  
Opportunistic Pathogens ◽  
Wide Range ◽  
Quercus Spp

Biscogniauxia canker or dieback (formerly called Hypoxylon canker or dieback) is a common contributor to poor health and decay in a wide range of tree species (Balbalian & Henn 2014). This disease is caused by several species of fungi in the genus Biscogniauxia (formerly Hypoxylon). B. atropunctata or B. mediterranea are usually the species found on Quercus spp. and other hosts in Florida, affecting trees growing in many different habitats, such as forests, parks, green spaces and urban areas (McBride & Appel, 2009).  Typically, species of Biscogniauxia are opportunistic pathogens that do not affect healthy and vigorous trees; some species are more virulent than others. However, once they infect trees under stress (water stress, root disease, soil compaction, construction damage etc.) they can quickly colonize the host. Once a tree is infected and fruiting structures of the fungus are evident, the tree is not likely to survive especially if the infection is in the tree's trunk (Anderson et al., 1995).

Investigating the feeding preferences of adult Leuctra inermis, for the pollen of typical riparian tree species

2020 ◽  
Vol 120B (3) ◽  
pp. 203
Author(s):  
Mc Conigley ◽  
Lally ◽  
Kelly-Quinn
Keyword(s):  
Tree Species ◽  
Feeding Preferences ◽  
Riparian Tree

Climate resilience through natural regeneration in degraded natural forests of south-eastern hilly region of Bangladesh

2019 ◽  
Vol 48 (3) ◽  
pp. 417-425
Author(s):  
Md Khayrul Alam Bhuiyan ◽  
Md Akhter Hossain ◽  
Abdul Kadir Ibne Kamal ◽  
Mohammed Kamal Hossain ◽  
Mohammed Jashimuddin ◽  
...  
Keyword(s):  
Tree Species ◽  
Natural Regeneration ◽  
Diversity Indices ◽  
Acacia Auriculiformis ◽  
Quantitative Structure ◽  
Natural Forests ◽  
Climate Resilience ◽  
Hilly Region ◽  
Major Cluster ◽  
Ecological Dominance

A study was conducted by using 5m × 5m sized 179 quadrates following multistage random sampling method for comparative regenerating tree species, quantitative structure, diversity, similarity and climate resilience in the degraded natural forests and plantations of Cox's Bazar North and South Forest Divisions. A total of 70 regenerating tree species were recorded representing maximum (47 species) from degraded natural forests followed by 43 species from 0.5 year 39 species from 1.5 year and 29 species from 2.5 year old plantations. Quantitative structure relating to ecological dominance indicated dominance of Acacia auriculiformis, Grewia nervosa and Lithocarpus elegans seedlings in the plantations whereas seedlings of Aporosa wallichii, Suregada multiflora and Grewia nervosa in degraded natural forests. The degraded natural forests possess higher natural regeneration potential as showed by different diversity indices. The dominance-based cluster analysis showed 2 major cluster of species under one of which multiple sub-clusters of species exists. Poor plant diversity and presence of regenerating exotic species in the plantations indicated poor climate resilience of forest ecosystem in terms of natural regeneration.

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