Effects of Acacia invasion on water quality, litterfall, aquatic decomposers, and leaf litter decomposition in streams DOI
Ana Pereira, Albano Figueiredo,

Nuno Coimbra

et al.

Freshwater Biology, Journal Year: 2024, Volume and Issue: 69(5), P. 705 - 723

Published: March 20, 2024

Abstract Small streams and their riparian vegetation are closely linked ecosystems. Thus, the invasion of native forests with non‐native species can impact stream We assessed effects broadleaf deciduous by evergreen, nitrogen‐fixing Acacia on seasonal variation relevant instream environmental variables, litterfall in area, aquatic decomposers, leaf litter decomposition, comparing three flowing through ( ) invaded central Portugal. Invaded flow composed (almost) monospecific stands trees. Litterfall area was sampled fabric traps sorted into five categories: (including phyllodes), flower, fruit seed, wood litter, other materials. Aquatic hyphomycete conidia suspended water were to assess concentration community composition. Leaf Quercus robur enclosed coarse‐mesh bags incubated decomposition rates associated macroinvertebrate density Samples from each variable collected monthly over 1 year. higher spring/summer when inputs, temperature, nutrient concentrations higher. In contrast, lower autumn/winter as they received less autumn than streams. structure changed, richness because lower. Macroinvertebrate shredder decomposing did not differ between streams, but may have artificially increased densities providing high quality food and/or refuges poor‐quality resources. Nevertheless, family Finally, Q. similar types, despite differences decomposer communities. Overall, changed quality, seasonality composition, communities (especially hyphomycetes). However, pronounced, suggesting that trophic levels be more resilient basal levels, or time/extent our strong enough affect macroinvertebrates processes. Instream strongly mediated changes inputs rather increases remained oligotrophic Simplification render them efficient coping additional changes. might mitigated maintenance a corridor vegetation. The protection non‐invaded galleries restoration ones could protect restore

Language: Английский

Invasive species drive cross-ecosystem effects worldwide DOI
Tianna Peller, Florian Altermatt

Nature Ecology & Evolution, Journal Year: 2024, Volume and Issue: 8(6), P. 1087 - 1097

Published: March 19, 2024

Language: Английский

Citations

19
Ecosystem services provided by small streams: an overview DOI
Verónica Ferreira, Ricardo Albariño, Aitor Larrañaga

et al.

Hydrobiologia, Journal Year: 2022, Volume and Issue: 850(12-13), P. 2501 - 2535

Published: Nov. 29, 2022

Language: Английский

Citations

57
The year of a leaf: Tracking the fate of leaf litter and its nutrients during aquatic decomposition and consumption DOI
Eva Cereghetti,

Raphaël Bossart,

Andreas Bruder

et al.

Ecology, Journal Year: 2025, Volume and Issue: 106(1)

Published: Jan. 1, 2025

Abstract Temperate streams are subsidized by inputs of leaf litter peaking in fall. Yet, stream communities decompose dead leaves and integrate their energy into the aquatic food web throughout whole year. Most studies investigating decomposition largely overlook long‐term trajectories, which must be understood for an appropriate temporal upscaling ecosystem processes. Using mesocosms, we quantified changes carbon, nitrogen, phosphorus content three species during at weekly to multi‐month intervals up a year; then, tested how duration affected subsequent consumption keystone amphipod macroinvertebrate. Over year, nitrogen percentage increased across all species, but only recalcitrant maintained initial levels absolute phosphorus. Prolonged barely or impaired labile whereas it enhanced feeding on species. Overall, demonstrate that might serve as longer stored potential resources when have already been consumed increasing palatability observed over sustained may stabilize fluctuations rates integration webs. This yearlong perspective highlights relevancy slow‐decomposing detrital communities.

Language: Английский

Citations

1
Variation on water quality of Kerangas forest streams due to invasion of Acacia DOI
Mohamad Hilmi Ibrahim, Salwana Md. Jaafar

Environmental Monitoring and Assessment, Journal Year: 2025, Volume and Issue: 197(3)

Published: Feb. 13, 2025

Language: Английский

Citations

1
The overlooked margins: how cities impact diversity of plants and terrestrial invertebrates along urban streams DOI Creative Commons

C Campos,

Salomé F.P. Almeida, Sónia R. Q. Serra

et al.

Urban Ecosystems, Journal Year: 2024, Volume and Issue: 27(5), P. 1751 - 1766

Published: April 26, 2024

Abstract The effect of different urbanization levels on terrestrial biodiversity associated with riparian zones remains poorly studied, despite the important ecosystem services it provides in cities. Studies focused aquatic ecosystems urban streams reported decreases ecological quality and species richness, lack sensitive taxa. Thus, we investigated impact zone flora invertebrates using as case studies nine spanning an gradient Portuguese city Coimbra. An unexpectedly high number taxa were identified (163 plants, 80 invertebrates), 80% new registrations for region one endemic-rare plant. Yet, diversity varied across streams, β-diversity reaching 39% Bray-Curtis similarity averaging 25%, due to many underrepresented ( N = 62 observed only site). Variation reached 59% plants 82% invertebrates. High numbers non-native (13%; 32), mostly suggested factors, e.g. human interference discharge variation, may have favored invasions. Indeed, constructed natural spaces along like parks, supported less biodiversity. Moreover, plant especially was correlated negatively percentages surrounding impervious areas positively water quality. This shows has negative effects vegetation, impacts both communities. Our results stress novel constituted by taxa, significance preservation. Less intense intervention vegetation is recommended increase

Language: Английский

Citations

6
Invasion by the non-native tree Vachellia farnesiana alters the understory composition of plants and soil properties in a managed forest in the subtropical region of Pakistan DOI
Muhammad Waheed, Shiekh Marifatul Haq, Fahim Arshad

et al.

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

Published: Feb. 14, 2025

Language: Английский

Citations

0
Seasonal dynamics of detritus flows and decomposition across ecosystem boundaries DOI Creative Commons
Eva Cereghetti, Tianna Peller,

Silvana Kaeser

et al.

Current Biology, Journal Year: 2025, Volume and Issue: unknown

Published: April 1, 2025

Material fluxes are ubiquitous in nature within and across ecosystems, connecting habitats with vastly different characteristics, like forests to rivers lakes.1,2,3 Although individual their cascading effects well known,4,5,6 very few studies address the intra-annual phenology of ecosystem processes, despite pronounced seasonality fluxes. Here, we empirically quantified resolved recalcitrant labile types leaf litter temperate riparian streams a year, representing one most emblematic examples seasonal systems. We variation inputs from terrestrial plants forest floors estimated aquatic decomposition rates year at 6-week intervals. Our data show that autumn pulse is complemented by smaller magnitude but more constant-through-the-year lateral flows stream ecosystems. Decomposition fluctuated seasonally, on phenology, generally higher summer, remained largely constant. Microorganisms were main contributors process both streams. Overall, our work highlights asynchronous seasonally variable changes between detritus initial synchronized availability suggests dominating presence buffers responses concentrated temporal distribution resources.7,8 Investigating such ecological processes borders fine resolutions imperative understand complex system context species' shifts phenologies resource quality.9,10,11.

Language: Английский

Citations

0
Fine-scale habitat preferences of riparian ectotherms in a human-influenced landscape: insights from two herptiles endemic to the Iberian Peninsula DOI Creative Commons
Francisco F. Aguilar, Guillermo Velo‐Antón, Pedro Tarroso

et al.

Biodiversity and Conservation, Journal Year: 2025, Volume and Issue: unknown

Published: April 11, 2025

Language: Английский

Citations

0
Dieback and Replacement of Riparian Trees May Impact Stream Ecosystem Functioning DOI Creative Commons
Alberto Alonso, Luz Boyero, Alejandro Solla

et al.

Microbial Ecology, Journal Year: 2024, Volume and Issue: 87(1)

Published: Jan. 16, 2024

Abstract Alders are nitrogen (N)-fixing riparian trees that promote leaf litter decomposition in streams through their high-nutrient inputs. While alders widespread across Europe, populations at risk due to infection by the oomycete Phytophthora × alni , which causes alder dieback. Moreover, death opens a space for establishment of an aggressive N-fixing invasive species, black locust ( Robinia pseudoacacia ). Shifts from vegetation containing healthy infected and, eventually, loss and replacement with may alter key process associated microbial decomposer assemblages. We examined this question microcosm experiment comparing three types mixtures: one representing original forest composed Alnus lusitanica ), ash Fraxinus angustifolia poplar Populus nigra ); same species composition where had been P. ; replaced locust. The lasted six weeks, every two microbially driven decomposition, fungal biomass, reproduction, assemblage structure were measured. Decomposition was highest mixtures lowest locust, reflecting differences nutrient concentrations. Mixtures showed distinct assemblages higher sporulation rates than Our results indicate its stream ecosystem processes assemblages, important changes already occurring during infection. This highlights importance maintaining heathy forests preserve proper functioning.

Language: Английский

Citations

3
Dam-induced difference of invasive plant species distribution along the riparian habitats DOI
Yanfeng Wang, Ying Liu, Maohua Ma

et al.

The Science of The Total Environment, Journal Year: 2021, Volume and Issue: 808, P. 152103 - 152103

Published: Dec. 2, 2021

Language: Английский

Citations

23