Stronger dispersal potential of alkaline phosphatase‐encoding bacteria ensures higher organic phosphorus mineralization rate

Functional Ecology, Journal Year: 2025, Volume and Issue: unknown

Published: Jan. 15, 2025

Abstract Scientific theory largely neglects linkage between organic phosphorus (Po) mineralization rate and dispersal potential of alkaline phosphatase‐encoding bacteria (PEB) containing the phoD gene. Different densities substrates (i.e. compacted soils, culture media, soil aggregates) were prepared molecular tools used to unveil relationship PEB Po rate. According morphological observations ecological studies, we found that stronger ensured a higher Higher rates in microaggregates than macroaggregates silt + clay, was related closely P fractions distributed heterogeneously aggregates. The gene abundance notably correlated with rate, rare mediated mineralization. Bradyrhizobium as identified genus dominated dramatically heterogeneous community, stochasticity (70.5%–89.5%) affected more on community assemblages PEB. showed other aggregates, indicated by weaker stability, species replacement, migration lower environmental constraint broader niche breadth. Overall, our results emphasize ensure these findings broaden understanding how maintain landscape function soils. Read free Plain Language Summary for this article Journal blog.

Language: Английский

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Inconsistent response of taxonomic groups to space and environment in mediterranean and tropical pond metacommunities

Ecology, Journal Year: 2022, Volume and Issue: 104(1)

Published: Aug. 8, 2022

The metacommunity concept provides a theoretical framework that aims at explaining organism distributions by combination of environmental filtering, dispersal, and drift. However, few works have attempted multitaxon approach even fewer compared two distant biogeographical regions using the same methodology. We tested expectation temperate (mediterranean-climate) pond metacommunities would be more influenced spatial processes than tropical ones, because stronger gradients greater isolation waterbodies. pattern should different among groups organisms depending on their dispersal abilities. surveyed 30 32 mediterranean temporary ponds from Costa Rica Spain, respectively, obtained data 49 variables. characterized biological communities bacteria archaea (from water column sediments), phytoplankton, zooplankton, benthic invertebrates, amphibians birds, estimated relative role space environment organization for each group region, means variation partitioning generalized additive models. Purely effects were important in both ponds, but latter, probably due to larger limnological heterogeneity. Spatially correlated pure tropics, related higher climatic heterogeneity (e.g., restriction, surplus) acting scales. variability between taxonomic contribution factors was very wide, active, with passive, dispersers. Higher observed passive dispersers, unexplained setting, suggesting stochastic processes, unmeasured factors, or biotic interactions although this difference affected some actively dispersing (insects birds) These results, despite our limitations comparing only regions, provide support, wide variety aquatic organisms, classic view abiotic niche constraints areas tropics. heterogeneous response also points influence regional context adaptations organization.

Language: Английский

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To what extent can we predict variation of bryophyte and tracheophyte community composition at fine spatial scale along an elevation gradient?

The Science of The Total Environment, Journal Year: 2024, Volume and Issue: 926, P. 171741 - 171741

Published: March 19, 2024

Mounting evidence points to the need for high-resolution climatic data in biodiversity analyses under global change. As we move finer resolution, other factors than climate, including abiotic variables and biotic interactions play, however, an increasing role, raising question of our ability predict community composition at fine scales. Focusing on two lineages land plants, bryophytes tracheophytes, determine relative contribution climatic, non-climatic environmental drivers, spatial effects, architecture one lineage lineage, how varies along elevation gradient. The relationship between 68 2-25 m factors, was investigated by hierarchical variance partitioning across 413 2x2m plots Swiss Alps. Climatic data, although significant, contributed less model any variable considered. Community reflecting both direct unmeasured (hidden) best predictor lineage. Total explained substantially varied with elevation, underlining fact that strength species composition-environment depending conditions. increased towards high up 50 %, importance effects vegetation architecture, pointing positive aggregated distribution patterns alpine environments. In increase also observed line hypothesis a stronger control harsher Further improvements changes plant may involve implementation historical higher-resolution better describe microhabitat conditions actually experienced organisms.

Language: Английский

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Understanding Ecological Complexity in a Chemical Stress Context: A Reflection on Recolonization, Recovery, and Adaptation of Aquatic Populations and Communities

Environmental Toxicology and Chemistry, Journal Year: 2023, Volume and Issue: 42(9), P. 1857 - 1866

Published: May 19, 2023

Abstract Recovery, recolonization, and adaptation in a chemical stress context are processes that regenerate local populations communities as well the functions these perform. Recolonization, either by species previously present or new able to occupy niches left empty, refers metacommunity process with stressed ecosystems benefiting from dispersal of organisms other areas. A potential consequence recolonization is limited capacity adapt potentially repeating events exposure when their have been effectively occupied colonizers genetic lineages taxa present. instead, an internal occurring within ecosystems. More specifically, impact stressor on community benefits less sensitive individuals population community. Finally, phenotypic and, sometimes, changes at individual levels, allowing permanence existing without necessarily changing taxonomic composition (i.e., not replacing species). Because usually operating parallel nature, though different degrees, it seems relevant try understand relative importance for regeneration structure ecosystem functioning after exposure. In critical perspective, we employed case studies supporting our understanding underlying hope provide theoretical framework disentangle relevance three biological some recommendations experimentally compare so net effects can be used parameterize risk-assessment models inform management. Environ Toxicol Chem 2023;42:1857–1866. © 2023 The Authors. Environmental Toxicology Chemistry published Wiley Periodicals LLC behalf SETAC.

Language: Английский

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How pondscapes function: connectivity matters for biodiversity even across small spatial scales in aquatic metacommunities

Ecography, Journal Year: 2023, Volume and Issue: 2024(2)

Published: Dec. 1, 2023

Habitat loss and fragmentation are growing global threats to natural habitats their networks, posing significant challenges biodiversity conservation. Globally, ponds sharply declining in number because small size makes them highly vulnerable land use changes. While it is generally agreed that connectivity habitat networks crucial for sustaining biodiversity, the effect of on patterns over small‐scaled has so far received less attention given general assumption metacommunities lack spatial structuring scales. In this study, we tested whether holds multiple passively actively dispersing organism groups a well‐delineated pond metacommunity 54 bomb crater situated within 1 km. We investigated influence space environment species richness structure these ponds, which share similar age, size, shape subject strong environmental gradients, making an ideal study system. specifically examined impact network centrality taxonomic eigenvector‐based arrangement across different groups, including prokaryotes, microeukaryotes, zooplankton, macroinvertebrates, amphibians. found while filtering primary driver community dynamics, there also signal, particularly demonstrating role central‐peripheral gradient. These findings highlight importance studying protecting as parts rather than focusing individual ponds.

Language: Английский

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Niche differentiation in rotifer cryptic species complexes: a review of environmental effects

Hydrobiologia, Journal Year: 2023, Volume and Issue: 851(12-13), P. 2909 - 2926

Published: Aug. 7, 2023

Abstract Adaptation to different ecological niches is considered one of the main drivers species diversification, also in cryptic complexes, notwithstanding their morphological stasis. We here review all published information on differentiation within complexes phylum Rotifera. found 177 instances identified genetically, 101 papers. Only a subset papers contained available differences and only for two 54 known namely Brachionus calyciflorus s.l. plicatilis s.l . , sufficient data were analyses differences. For B. complex, fernandoi consistently occurred at significantly lower temperature than other complex; no environmental variables. paranguensis waters with higher pH species; These results, even if preliminary based scattered information, reveal that adaptation exists between closely related species. Our aim showcase this interesting field research spurring further detailed studies focus mechanisms speciation using rotifer as model system.

Language: Английский

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The Geography of Metacommunities: Landscape Characteristics Drive Geographic Variation in the Assembly Process through Selecting Species Pool Attributes

The American Naturalist, Journal Year: 2024, Volume and Issue: 203(5), P. E142 - E156

Published: Jan. 11, 2024

Language: Английский

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Spatial versus spatio-temporal approaches for studying metacommunities: a multi-taxon analysis in Mediterranean and tropical temporary ponds

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2020)

Published: April 2, 2024

Prior research on metacommunities has largely focused snapshot surveys, often overlooking temporal dynamics. In this study, our aim was to compare the insights obtained from metacommunity analyses based a spatial approach repeated over time, with spatio-temporal that consolidates all data into single model. We empirically assessed influence of variation in environment and connectivity structure tropical Mediterranean temporary ponds. Employing standardized methodology across both regions, we surveyed multiple freshwater taxa three time periods within same hydrological year ponds each region. To evaluate how environmental, influences vary between two approaches, used nonlinear partitioning generalized additive models. Overall, study underscores importance adopting analytics better understand processes shaping metacommunities. While suggested environmental factors had greater influence, analysis revealed primary driver influencing regions. Temporal effects were equally important as effects, suggesting significant role ecological succession structure.

Language: Английский

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Freshwater microcrustaceans of Hispaniola: new records and potential as biological control agents

Limnetica, Journal Year: 2023, Volume and Issue: 43(1), P. 1 - 1

Published: May 5, 2023

Some species of freshwater microcrustaceans have been widely used for biological control mosquito larval populations. These zooplankton communities play an important role against some mosquitoes by exerting competitive pressure or predation. However, zooplankters are scarcely studied in many Caribbean islands such as Hispaniola. The goal this study was to improve the knowledge these order better understand biodiversity and ecology Antillean Island. Samples were taken from 28 ponds northern Dominican Republic during 2020. total richness 25 species, comprising 17 copepods 8 cladocerans. Most collected previously described island, them registered potential controllers larvae Five genera (including 6 species) that inhabit recorded first time Hispaniola: Simocephalus Schoedler, 1858; Pleuroxus Baird, 1853; Ilyocryptus G.O. Sars, 1861; Apocyclops Lindberg, 1942; Diacyclops Kiefer, 1927. Here, we discuss new findings relation and/or predatory larvae. present improves Republic.

Language: Английский

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Higher alpha and gamma, but not beta diversity in tropical than in Mediterranean temporary ponds: A multi‐taxon spatiotemporal approach

Limnology and Oceanography, Journal Year: 2023, Volume and Issue: 68(10), P. 2402 - 2414

Published: Sept. 7, 2023

Abstract The latitudinal diversity gradient predicts that tropical regions should have higher alpha, beta, and gamma than temperate areas. However, only a few studies assessed the temporal variability of different components across climatic regions. In this study, we compare, using spatial approach, multiple taxa inhabiting Mediterranean temporary ponds. We sampled biological communities each set ponds on three occasions during same hydrological year. Under framework, analyzed, diversities. With compared coefficients variation in alpha for local community, beta diversity. Differences between sampling periods were tested generalized linear mixed models. found ponds, as expected given differences them. phytoplankton microinvertebrates from region, matched or even exceeded some occasions. Spatial did not differ regions, it showed lower values at middle end hydroperiod bacteria, micro‐ macroinvertebrates amphibians. Thus, processes homogenizing heterogenising pond metacommunities must be balanced both studied Temporal was similar except amphibians, suggesting differential effects community observable animals with longer life‐spans, our scale analysis.

Language: Английский

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