Mapping water ecosystem services: Evaluating InVEST model predictions in data scarce regions

Environmental Modelling & Software, Journal Year: 2021, Volume and Issue: 138, P. 104982 - 104982

Published: Feb. 5, 2021

Language: Английский

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Freshwater phytoplankton diversity: models, drivers and implications for ecosystem properties

Hydrobiologia, Journal Year: 2020, Volume and Issue: 848(1), P. 53 - 75

Published: July 4, 2020

Our understanding on phytoplankton diversity has largely been progressing since the publication of Hutchinson paradox plankton. In this paper, we summarise some major steps in ecology context mechanisms underlying diversity. Here, provide a framework for community assembly and an overview measures taxonomic functional We show how ecological theories species competition together with modelling approaches laboratory experiments helped understand coexistence maintenance phytoplankton. The non-equilibrium nature role disturbances shaping are also discussed. Furthermore, discuss water body size, productivity habitats temperature richness, may affect functioning lake ecosystems. At last, give insight into molecular tools that have emerged last decades argue it broadened our perspective microbial Besides historical backgrounds, critical comments made.

Language: Английский

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Diatoms define a novel freshwater biogeography of the Antarctic

Ecography, Journal Year: 2021, Volume and Issue: 44(4), P. 548 - 560

Published: Jan. 19, 2021

Terrestrial biota in the Antarctic are more globally distinct and highly structured biogeographically than previously believed, but information on biogeographic patterns endemism freshwater communities is largely lacking. We studied of diatoms based analysis species occurrences a dataset 439 lakes spread across realm. Highly diatom floras, both terms composition richness, characterize Continental Antarctica, Maritime Antarctica sub‐Antarctic islands, with marked provincialism each region. A total 44% all estimated to be endemic Antarctic, most them confined single The level significantly increases increasing latitude geographic isolation. Our results have implications for conservation planning, suggest that successful dispersal within limited, fostering evolution floras.

Language: Английский

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Modeling Water Yield: Assessing the Role of Site and Region-Specific Attributes in Determining Model Performance of the InVEST Seasonal Water Yield Model

Water, Journal Year: 2018, Volume and Issue: 10(11), P. 1496 - 1496

Published: Oct. 23, 2018

Simple hydrological models, such as the Seasonal Water Yield Model developed by Natural Capital Project (InVEST SWYM), are attractive data requirements relatively easy to satisfy. However, simple models may produce unrealistic results when underlying processes inadequately described. We used variation in performance of InVEST SWYM across watersheds identify correlates poorly modeled outcomes SWYM. grouped 749 from North America into five bioclimatic regions using nine environmental variables. For each region, we compared predicted flow patterns actual conditions over a 15-year period. The correlation between and flows was highly dispersed poor, with 92% r2 values less than 0.5 42% 0.1. linked cryospheric variables model region poorest (the Low elevation Boreal Sub-humid region—LeBSh). After incorporating SWYM, predictions improved significantly 30% LeBSh watersheds. provide straightforward approach for identifying that not consider or which need further attention refinement.

Language: Английский

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Lake regionalization and diatom metacommunity structuring in tropical South America

Ecology and Evolution, Journal Year: 2018, Volume and Issue: 8(16), P. 7865 - 7878

Published: July 13, 2018

Lakes and their topological distribution across Earth's surface impose ecological evolutionary constraints on aquatic metacommunities. In this study, we group similar lake ecosystems as metacommunity units influencing diatom community structure. We assembled a database of 195 lakes from the tropical Andes adjacent lowlands (8°N-30°S 58-79°W) with associated environmental predictors to examine patterns at two different levels: taxon functional (deconstructed species matrix by guilds). also derived spatial variables that inherently assessed relative role dispersal. Using complementary multivariate statistical techniques (principal component analysis, cluster nonmetric multidimensional scaling, Procrustes, variance partitioning), examined diatom-environment relationships among habitats (sediment surface, periphyton, plankton) partitioned variation evaluate influence niche- dispersal-based assembly processes in structure clusters. The results showed significant association between geographic clusters based gradients climate landscape configuration assemblages. Six distributed along latitudinal gradient were identified for communities. Variance partitioning revealed dispersal mechanisms major contributor structure, but highly context-dependent fashion Andean Altiplano Bolivia, metacommunities are niche constrained either limitation or mass effects, resulting area, heterogeneity, guild relationships. Topographic heterogeneity played an important structuring planktic emphasize value guild-based model linked elucidating underlying distribution. Our findings reveal importance shifts drivers climatic physiographically distinct clusters, providing basis comparison broad-scale lake-rich regions elsewhere. This may help guide future research explore rich Neotropical benthic pool.

Language: Английский

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Fifteen important questions in the spatial ecology of diatoms

Freshwater Biology, Journal Year: 2019, Volume and Issue: 64(11), P. 2071 - 2083

Published: Aug. 12, 2019

Abstract Recently, studies about the spatial distribution of microbial species and communities have increased substantially. Freshwater diatoms are used as one most popular model taxa in such macroecological studies, but exciting patterns ecology not been reviewed. Here, we identify 15 important questions freshwater diatom ecology, review major findings, suggest novel research avenues. We found that do support classical latitudinal diversity gradient, species–area relationship or Rapoport's rule. some, albeit inconsistent for an elevational Bergmann's rule niche conservation. Diatoms a positive interspecific abundance–occupancy like nearly all other taxa. With regards to metacommunity dynamics, typically structured by sorting, neutral dynamics mass effects also evident at large small scale, respectively. Taken together, this suggests follow some biogeographical similarly larger taxa, weaker than macro‐organisms. This may result because relatively strongly controlled local factors often exhibit efficient stochastic dispersal processes both scales. More is needed build more comprehensive view relationships gradients diversity, example. In future, well‐replicated field experiments, with intercontinental global coverage, trait‐based approaches, DNA ‐based identification would be fruitful avenues shed light into diatoms.

Language: Английский

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Contrasting effects of Western vs Mediterranean diets on monocyte inflammatory gene expression and social behavior in a primate model

eLife, Journal Year: 2021, Volume and Issue: 10

Published: Aug. 2, 2021

Dietary changes associated with industrialization increase the prevalence of chronic diseases, such as obesity, type II diabetes, and cardiovascular disease. This relationship is often attributed to an ‘evolutionary mismatch’ between human physiology modern nutritional environments. Western diets enriched foods that were scarce throughout evolutionary history (e.g. simple sugars saturated fats) promote inflammation disease relative more akin ancestral hunter-gatherer diets, a Mediterranean diet. Peripheral blood monocytes, precursors macrophages important mediators innate immunity inflammation, are sensitive environment may represent critical intermediate in pathway linking diet We evaluated effects 15 months whole manipulations mimicking or patterns on monocyte polarization well-established model health, cynomolgus macaque ( Macaca fascicularis ). Monocyte transcriptional profiles differed markedly 40% transcripts showing differential expression (FDR < 0.05). Monocytes from consumers polarized toward proinflammatory phenotype. The shifted co-expression 445 gene pairs, including small RNAs transcription factors metabolism adiposity humans, dramatically altered behavior. For example, Western-fed individuals anxious less socially integrated. These behavioral also some expression, suggesting interaction diet, central nervous system activity, expression. study provides new molecular insights into mismatch uncovers pathways through which alter

Language: Английский

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Planktic diatom responses to spatiotemporal environmental variation in high‐mountain tropical lakes

Freshwater Biology, Journal Year: 2024, Volume and Issue: 69(3), P. 387 - 402

Published: Jan. 18, 2024

Abstract Tropical lakes harbour high levels of biodiversity, but the temporal and spatial variability biological communities are still inadequately characterised, making it difficult to predict impact accelerated rates environmental change in these regions. Our goal was identify spatiotemporal dynamics planktic diatom community Cajas Massif tropical Andes. We analysed seasonal data over a period 1 year from 10 located geologically distinct basins modelled community–environment relationships using multivariate ordination variation partitioning techniques. Generalised additive models with full‐subset information theoretic approach also were used determine which variables explain single‐species abundance. Although monomictic thus have variable thermal structure across year, water chemistry conditions negligible, differences composition small. Across space, correlated primarily ionic content (divalent cations alkalinity), related bedrock composition, secondly lake productivity. The gradient overrode effect structure–productivity at level, whereas individual species responded more sensitively in‐lake catchment productivity, including chlorophyll‐ iron, proportion wetlands catchment. results indicate that their is result multiple intertwined factors. emergence gradients rather small district suggests segregation ecological niches for diatoms may be important other high‐elevation Future studies track Andean under natural anthropogenically mediated change, both contemporary times palaeoenvironmental reconstructions, would benefit modelling (community levels) developed here.

Language: Английский

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The relative importance of dispersal and local factors in structuring phytoplankton communities in high mountain lakes in the Pyrenees

Inland Waters, Journal Year: 2025, Volume and Issue: unknown, P. 1 - 15

Published: Feb. 7, 2025

Evaluating the relative contributions of local environmental versus regional spatial descriptors to shaping phytoplankton communities provides an understanding community dynamics high mountain lakes. The present study elucidated role lake morphometric, physicochemical, biological, and in determining patterns diversity composition based on taxonomic morphologically functional groups. We collected samples phytoplankton, zooplankton, abiotic variables from 24 Pyrenean influence factors alpha was analyzed using generalized linear models, beta regressions. To detect biogeographical patterns, we performed Mantel correlation tests, identify drivers composition, redundancy analysis. found that only significantly contributed structure lakes, with nutrient- light-associated being major compositional variations. Our results suggested total phosphorus affects patterns. This highlighted niche-related are main explain dispersal limitation is not notably influential lakes within Lake district.

Language: Английский

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The soda lakes of Nhecolândia: A conservation opportunity for the Pantanal wetlands

Perspectives in Ecology and Conservation, Journal Year: 2018, Volume and Issue: 17(1), P. 9 - 18

Published: Dec. 11, 2018

The Pantanal is the most conserved biome in Brazil and among last wild refuges South America, but intensification of agriculture other land use changes present challenges for protecting this exceptionally biodiverse wetland ecosystem. Recent studies have shed new light on origins biogeochemistry a suite >600 small saline-alkaline lakes Nhecolândia, floodplain setting located south Taquari River south-central Pantanal. These soda form unique aquatic environment nascent research their geomicrobiology suggests that biota may be analogous to early life, extreme life Earth's deep biosphere. We argue conservation lower Nhecolândia region should an important strategic component any plan aims mitigate advance unsustainable land-use change Soda lake has implications carbon cycle, as these landforms sequester dioxide transmit considerably concentrations methane comparison macrophyte-rich freshwater region. Further, minerals precipitated are leveraged cattle consumption, therefore continued presence critical allowing pantaneiro ranchers pursue certified organic, sustainable beef production systems. Beyond surrounding forests (mata de cordilheiras) food systems security, strategy would also allow further little studied extremophile biodiversity biogeochemistry, with potential biotechnological innovations attendant UN Sustainable Development Goals.

Language: Английский

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