Lakes in the era of global change: moving beyond single‐lake thinking in maintaining biodiversity and ecosystem services

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2020, Номер 96(1), С. 89 - 106

Опубликована: Сен. 1, 2020

ABSTRACT The Anthropocene presents formidable threats to freshwater ecosystems. Lakes are especially vulnerable and important at the same time. They cover only a small area worldwide but harbour high levels of biodiversity contribute disproportionately ecosystem services. differ with respect their general type (e.g. land‐locked, drainage, floodplain large lakes) position in landscape highland versus lowland lakes), which dynamics these systems. should be generally viewed as ‘meta‐systems’, whereby is strongly affected by species dispersal, contributed flow matter substances among locations broader waterscape context. Lake connectivity determine degree lake prone invasion non‐native accumulation harmful substances. Highly connected lakes low accumulate nutrients pollutants originating from ecosystems higher landscape. monitoring restoration services consider fact that dynamism present local, regional global scales. However, local may plagued unpredictability ecological phenomena, hindering adaptive management lakes. Although data increasingly becoming available study responses change, we still lack suitable integration models for entire waterscapes. Research across disciplinary boundaries needed address challenges face because they play an role harbouring unique aquatic biota well providing goods future.

Язык: Английский

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Biotic homogenisation and differentiation as directional change in beta diversity: synthesising driver–response relationships to develop conceptual models across ecosystems

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2023, Номер 98(4), С. 1388 - 1423

Опубликована: Апрель 18, 2023

ABSTRACT Biotic homogenisation is defined as decreasing dissimilarity among ecological assemblages sampled within a given spatial area over time. differentiation, in turn, increasing Overall, changes the dissimilarities (termed ‘beta diversity’) an increasingly recognised feature of broader biodiversity change Anthropocene. Empirical evidence biotic and differentiation remains scattered across different ecosystems. Most meta‐analyses quantify prevalence direction beta diversity, rather than attempting to identify underlying drivers such changes. By conceptualising mechanisms that contribute or composition space, environmental managers conservation practitioners can make informed decisions about what interventions may be required sustain predict potential outcomes future disturbances. We systematically reviewed synthesised published empirical for terrestrial, marine, freshwater realms derive conceptual models explain diversity. pursued five key themes our review: ( i ) temporal change; ii disturbance regime; iii connectivity alteration species redistribution; iv habitat v trophic interactions. Our first model highlights how occur function local (alpha) diversity regional (gamma) independently invasions losses due occurrence assemblages. Second, magnitude depends on interaction between variation (patchiness) (synchronicity) events. Third, context redistribution, divergent have dispersal characteristics, associated with also strongly alpha gamma prior invasion. Fourth, positively linked variability, when heterogeneity decreases increases, respectively. Fifth, interactions influence via modification, disease, consumption (trophic dynamics), competition, by altering ecosystem productivity. synthesis multitude cause more less spatially similar (taxonomically, functionally, phylogenetically) through consider studies should aim enhance collective understanding systems clarifying driving focusing only reporting per se .

Язык: Английский

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Biotic interactions hold the key to understanding metacommunity organisation

Ecography, Год журнала: 2020, Номер 43(8), С. 1180 - 1190

Опубликована: Май 19, 2020

Biotic interactions are fundamental drivers governing biodiversity locally, yet their effects on geographical variation in community composition (i.e. incidence‐based) and structure abundance‐based) at regional scales remain controversial. Ecologists have only recently started to integrate different types of biotic into assembly a spatial context, theme that merits further empirical quantification. Here, we applied partial correlation networks infer the strength dependencies between pairs organismal groups mapped imprints pond metacommunities. To do this, used comprehensive dataset from Mediterranean landscapes adopted perspective is best represented as network interacting groups. Our results revealed co‐variation among beta diversities multiple primarily driven by and, lesser extent, abiotic environment. These suggest ignoring may undermine our understanding mechanisms spatially extensive areas decrease accuracy performance predictive models. We found strong analyses which can be interpreted functional relationships several (e.g. macrophytes–macroinvertebrates, fish–zooplankton). Perhaps more importantly, support notion make crucial contributions species sorting paradigm metacommunity theory raise question whether these biologically‐driven signals been equally underappreciated other aquatic terrestrial ecosystems. Although research still required empirically capture importance across ecosystems resolutions extents, findings allow decision makers better foresee main consequences human‐driven impacts inland waters, particularly those associated with addition or removal key species.

Язык: Английский

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Shortfalls in our understanding of the causes and consequences of functional and phylogenetic variation of freshwater communities across continents

Biological Conservation, Год журнала: 2023, Номер 282, С. 110082 - 110082

Опубликована: Апрель 23, 2023

Freshwater ecosystems harbour a disproportionately high biodiversity relative to their area, being also one of the most threatened ecosystem types worldwide. However, our capacity design evidence-based conservation plans for this realm is restricted by all shortfalls that have been recognized so far. In context, paucity comparable field data and information on traits phylogenies freshwater organisms should be emphasized. Here, we highlight how increased knowledge could gained where aim at in research functional phylogenetic features communities. First, attempts combine datasets from different sources pay careful attention harmonization. Second, more effort focused natural history observations species habitats life histories, providing backbone multi-trait databases. Third, fully resolved would required deciphering evolutionary relationships organisms. Provided these three hurdles can overcome, conducting studies local communities across continental spatial extents pave way mapping functionally important evolutionarily valuable areas habitats.

Язык: Английский

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Macroecology of macrophytes in the freshwater realm: Patterns, mechanisms and implications

Aquatic Botany, Год журнала: 2020, Номер 168, С. 103325 - 103325

Опубликована: Ноя. 6, 2020

Язык: Английский

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Assessing the conservation priority of freshwater lake sites based on taxonomic, functional and environmental uniqueness

Diversity and Distributions, Год журнала: 2022, Номер 28(9), С. 1966 - 1978

Опубликована: Июль 2, 2022

Abstract Aim We propose a novel approach that considers taxonomic uniqueness, functional uniqueness and environmental show how it can be used in guiding conservation planning. illustrate the using data for lake biota environment. Location Lake Puruvesi, Finland. Methods sampled macrophytes macroinvertebrates from same 18 littoral sites. By adapting original “ecological uniqueness” approach, we distance‐based methods to calculate measures of (LCBD– t ), f ) (LCEH) each site. also considered numbers locations sites needed protect up 70% total variation taxonomic, or features studied part lake. Results Relationships between were generally weak, only relationship macrophyte LCBD– was statistically significant. Overall, however, if whole biotic dataset considered, macroinvertebrate values showed consistent positive with . Depending on measure site one‐third one half could help ecological Puruvesi. Main conclusions Although examined originated large system, proposed here applied different ecosystems at various spatial scales. An important consideration is set has been methods, resulting species matrices analysed methodological here. This framework easily grid‐based data, sets islands forest fragments. suggest based will useful tool nature ecosystem management, especially associated meta‐system ideas network thinking.

Язык: Английский

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The relationships between biotic uniqueness and abiotic uniqueness are context dependent across drainage basins worldwide

Landscape Ecology, Год журнала: 2024, Номер 39(4)

Опубликована: Апрель 5, 2024

Abstract Context Global change, including land-use change and habitat degradation, has led to a decline in biodiversity, more so freshwater than terrestrial ecosystems. However, the research on freshwaters lags behind marine studies, highlighting need for innovative approaches comprehend biodiversity. Objectives We investigated patterns relationships between biotic uniqueness abiotic environmental drainage basins worldwide. Methods compiled high-quality data aquatic insects (mayflies, stoneflies, caddisflies at genus-level) from 42 spanning four continents. Within each basin we calculated (local contribution beta diversity, LCBD) of insect assemblages, types heterogeneity, LCEH), categorized into upstream land cover, chemical soil properties, stream site landscape position, climate. A mixed-effects meta-regression was performed across examine variations strength LCBD-LCEH relationship terms latitude, human footprint, major continental regions (the Americas versus Eurasia). Results On average, LCBD LCEH were weak. direction varied among basins. Latitude, footprint index, or location did not explain significant variation relationship. Conclusions detected strong context dependence Varying conditions gradient lengths basins, historical contingencies, stochastic factors may these findings. This underscores basin-specific management practices protect biodiversity riverine systems.

Язык: Английский

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Damming affects riverine macroinvertebrate metacommunity dynamics: Insights from taxonomic and functional beta diversity

The Science of The Total Environment, Год журнала: 2020, Номер 763, С. 142945 - 142945

Опубликована: Окт. 14, 2020

Язык: Английский

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Temporal beta diversity of lake plants is determined by concomitant changes in environmental factors across decades

Journal of Ecology, Год журнала: 2020, Номер 109(2), С. 819 - 832

Опубликована: Сен. 23, 2020

Abstract To comprehensively understand the impact of anthropogenic activities on biodiversity, we must how biodiversity has changed over time and what are underlying processes. A growing body evidence shown that beta diversity reveals more about temporal changes in compared with alpha diversity. Temporal indicates, for example, degrees change species composition at single locations through time. We examined whether freshwater plant communities showed different patterns relation to concomitant environmental conditions across decades. do this, used presence–absence data lake plants five decades (1940s–2010s) from southern Finland calculated indices (TBI) each between pairs whole community, hydrophytes helophytes. get insights into possible processes behind observed trends, decomposed TBIs contributed by either losses or gains species. related their loss gain components landscape position variables. Based comparisons survey decade pairs, aquatic was modest Hydrophyte assemblages have than helophyte assemblages. The main occurred 1940s 1970s, when new dominant process lakes throughout landscape. Following period, there only changes, but 2000s 2010s, played a key role explaining TBI. Our results relying two points can result limited knowledge ecological phenomenon under study and, an exceptional year terms weather hinder detecting overall long‐term trends compositional changes. Therefore, future studies should try combine several overcome typical limitations information.

Язык: Английский

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The role of environmental conditions, climatic factors and spatial processes in driving multiple facets of stream macroinvertebrate beta diversity in a climatically heterogeneous mountain region

Ecological Indicators, Год журнала: 2021, Номер 124, С. 107407 - 107407

Опубликована: Янв. 27, 2021

There is a growing recognition that examining patterns of ecological communities and their underlying determinants not only feasible based on taxonomic data, but also functional phylogenetic approaches. This because these additional facets can enhance the understanding relative contribution multiple processes in shaping biodiversity. However, few studies have focused multifaceted beta diversities lotic macroinvertebrates, especially when considering driving factors operating at spatial scales. Here, we examined multi-faceted (i.e., taxonomic, phylogenetic) diversity components turnover nestedness) macroinvertebrates 50 sites 10 streams situated north south slope Qinling Mountains, geographical dividing line Northern Southern China. We found draining showed significantly lower values all three than slope. Such north-to-south increases were caused by distinct climatic local environmental conditions between sides mountain range. Moreover, variables generally played most important role structuring diversity, followed variables, whereas catchment less important. Despite similar results explanatory each facet, details community-environment relationships (e.g., power) among different components. In conclusion, measuring provides complementary information to traditional approach. Therefore, an integrative approach embracing better reveal mechanisms biodiversity, which essential assessing valuing aquatic ecosystems for biodiversity management conservation.

Язык: Английский

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