scholarly journals Island biogeography: an avenue for research in bryology

2021 ◽  
Vol 43 (1) ◽  
Author(s):  
JAIRO PATIÑO ◽  
ALAIN VANDERPOORTEN
Keyword(s):  
Island Biogeography ◽  
Current Knowledge ◽  
Biotic Interactions ◽  
Invasion Biology ◽  
Main Research ◽  
Island Biology ◽  
Species Area ◽  
Level Of Knowledge ◽  
Species Area Relationship ◽  
Biology Research

In the present review, we provide an updated account on the level of knowledge in island bryophyte biogeography. In the framework of the 50 most fundamental questions for present and future island biology research highlighted by Patiño et al. (2017), we summarize current knowledge in bryophyte island biogeography and outline main research avenues for the future in the field. We found that only about 50% of the key current questions in island biogeography have been addressed to some extent, at least once, in bryophytes. Even fundamental questions that have caught the attention of ecologists since more than one century, such as the species-area relationship, have only rarely been dealt with in bryophytes. The application of the Island Biogeography Theory therefore opens an avenue for research in bryology, and we discuss the most salient features, including species and community phylogenetics, biotic interactions, and invasion biology.

scholarly journals Saprotrophic fungal diversity predicts ectomycorrhizal fungal diversity along the timberline in the framework of island biogeography theory

2021 ◽  
Vol 1 (1) ◽  
Author(s):  
Teng Yang ◽  
Leho Tedersoo ◽  
Xiao Fu ◽  
Chang Zhao ◽  
Xu Liu ◽  
...  
Keyword(s):  
Island Biogeography ◽  
Fungal Diversity ◽  
Biotic Interactions ◽  
Vertical Gradient ◽  
Forest Edge ◽  
Breast Height ◽  
Island Biogeography Theory ◽  
Species Area ◽  
Tight Association ◽  
Fungal Kingdom

AbstractIsland biogeography theory (IBT) is one of the most fruitful paradigms in macroecology, positing positive species-area and negative species-isolation relationships for the distribution of organisms. Biotic interactions are also crucial for diversity maintenance on islands. In the context of a timberline tree species (Betula ermanii) as “virtual island”, we surveyed ectomycorrhizal (EcM) fungal diversity along a 430-m vertical gradient on the top of Changbai Mountain, China, sampling fine roots and neighboring soils of B. ermanii. Besides elevation, soil properties and plant functional traits, endophytic and saprotrophic fungal diversity were assessed as candidate predictors to construct integrative models. EcM fungal diversity decreased with increasing elevation, and exhibited positive diversity to diameter at breast height and negative diversity to distance from forest edge relationships in both roots and soils. Integrative models further showed that saprotrophic fungal diversity was the strongest predictor of EcM fungal diversity, directly enhancing EcM fungal diversity in roots and soils. Our study supports IBT as a basic framework to explain EcM fungal diversity. The diversity-begets-diversity hypothesis within the fungal kingdom is more predictive for EcM fungal diversity within the IBT framework, which reveals a tight association between saprotrophic and EcM fungal lineages in the timberline ecosystem.

scholarly journals From Island Biogeography to Conservation: A Multi-Taxon and Multi-Taxonomic Rank Approach in the Tuscan Archipelago

Land ◽  
2021 ◽  
Vol 10 (5) ◽  
pp. 486
Author(s):  
Enrico Ruzzier ◽  
Leonardo Forbicioni ◽  
Rodolfo Gentili ◽  
Nicola Tormen ◽  
Olivia Dondina ◽  
...  
Keyword(s):  
Species Richness ◽  
Differential Effect ◽  
Island Biogeography ◽  
Regression Models ◽  
Habitat Diversity ◽  
Land Bridge ◽  
Taxonomic Rank ◽  
Island Area ◽  
Species Area ◽  
Species Area Relationship

Investigating the drivers that support species richness (S) in insular contexts can give insights for the conservation of insular biodiversity. Our aim was to decouple the effect of drivers (island area, distance from mainland and habitat diversity) accounted in three hypotheses or a combination of them in explaining S in seven islands of the Tuscan Archipelago: Area (species–area relationship, SAR), area and distance from mainland (equilibrium hypothesis, EQH) and habitat (habitat diversity hypothesis, HDH). We used published and original datasets to assess S (except aliens) for 42 taxa (14 animal and 28 plant taxa) in each island, and we used S as the dependent variable and the drivers as covariates in regression models. In 31 taxa, the data supported one of the tested hypotheses or a combination of them, and the most commonly supported hypotheses were SAR (12 taxa) and EQH (10 taxa). The effect of the area was also evident in SAR + HDH (five taxa) and EQH + HDH (one taxon), making it the prevailing driver in explaining S. Since distances are relatively short, and three out of four islands are land-bridge islands, the effect of distance was significant for 12 taxa. The effects of habitat diversity were evident for just nine taxa. The multi-taxon approach allowed us to understand the differential effect of drivers among taxa in influencing S in a single archipelago. Moreover, the multi-taxonomic rank approach highlighted how the information contained within higher taxonomic ranks (e.g., Division) can be substantially different from that derived from lower ranks (e.g., Family). These insights are of particular importance from a conservation perspective of the archipelago’s biodiversity, and this approach can be transferred to mainland fragmented systems.

Nitric oxide signalling in plant interactions with pathogenic fungi and oomycetes

2020 ◽  
Author(s):  
Tereza Jedelská ◽  
Lenka Luhová ◽  
Marek Petřivalský
Keyword(s):  
Nitric Oxide ◽  
Current Knowledge ◽  
Biotic Interactions ◽  
Decisive Role ◽  
Pathogenic Fungi ◽  
Plant Colonization ◽  
No Production ◽  
Plant Interactions ◽  
Oriented Growth ◽  
Plant Pathogen Interactions

Abstract Nitric oxide (NO) and reactive nitrogen species have emerged as crucial signalling and regulatory molecules across all organisms. In plants, fungi and fungi-like oomycetes, NO is involved in the regulation of multiple processes during their growth, development, reproduction, responses to the external environment and biotic interactions. It has become evident that NO is produced and used as signalling and defence cues by both partners in multiple forms of plant interactions with their microbial counterparts, ranging from symbiotic to pathogenic modes. This review summarizes current knowledge on NO role in plant-pathogen interactions, focused on biotrophic, necrotrophic and hemibiotrophic fungi and oomycetes. Actual advances and gaps in the identification of NO sources and fate in plant and pathogen cells are discussed. We review the decisive role of time- and site-specific NO production in germination, oriented growth and active penetration of filamentous pathogens to the host tissues, as well in pathogen recognition, and defence activation in plants. Distinct functions of NO are highlighted on diverse interactions of host plants with fungal and oomycete pathogens of different lifestyles, where NO in interplay with reactive oxygen species govern successful plant colonization, cell death and resistance establishment.

scholarly journals The species–area relationship and evolution

2006 ◽  
Vol 241 (3) ◽  
pp. 590-600 ◽  
Author(s):  
Daniel Lawson ◽  
Henrik Jeldtoft Jensen
Keyword(s):  
Species Area ◽  
Species Area Relationship

scholarly journals Solutions in microbiome engineering: prioritizing barriers to organism establishment

2021 ◽  
Author(s):  
Michaeline B. N. Albright ◽  
Stilianos Louca ◽  
Daniel E. Winkler ◽  
Kelli L. Feeser ◽  
Sarah-Jane Haig ◽  
...  
Keyword(s):  
Microbial Community ◽  
Ecosystem Function ◽  
Restoration Ecology ◽  
Propagule Pressure ◽  
Environmental Filtering ◽  
Biotic Interactions ◽  
Invasion Biology ◽  
Engineering Research

AbstractMicrobiome engineering is increasingly being employed as a solution to challenges in health, agriculture, and climate. Often manipulation involves inoculation of new microbes designed to improve function into a preexisting microbial community. Despite, increased efforts in microbiome engineering inoculants frequently fail to establish and/or confer long-lasting modifications on ecosystem function. We posit that one underlying cause of these shortfalls is the failure to consider barriers to organism establishment. This is a key challenge and focus of macroecology research, specifically invasion biology and restoration ecology. We adopt a framework from invasion biology that summarizes establishment barriers in three categories: (1) propagule pressure, (2) environmental filtering, and (3) biotic interactions factors. We suggest that biotic interactions is the most neglected factor in microbiome engineering research, and we recommend a number of actions to accelerate engineering solutions.

Fragmentation, grazing and the species-area relationship

Ecography ◽  
2012 ◽  
Vol 35 (3) ◽  
pp. 224-231 ◽  
Author(s):  
Tiffany L. Bogich ◽  
Gary M. Barker ◽  
Karin Mahlfeld ◽  
Frank Climo ◽  
Rhys Green ◽  
...  
Keyword(s):  
Species Area ◽  
Species Area Relationship

Self‐Similarity, the Power Law Form of the Species‐Area Relationship, and a Probability Rule: A Reply to Maddux

2004 ◽  
Vol 163 (4) ◽  
pp. 627-633 ◽  
Author(s):  
Annette Ostling ◽  
John Harte ◽  
Jessica L. Green ◽  
Ann P. Kinzig
Keyword(s):  
Power Law ◽  
Self Similarity ◽  
Species Area ◽  
Species Area Relationship
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