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 Acacia Tree Species Affect Instream Litter Decomposition Through Changes in Water Nitrogen Concentration and Litter Characteristics DOI
Ana Pereira, Albano Figueiredo, Verónica Ferreira

et al.

Microbial Ecology, Journal Year: 2021, Volume and Issue: 82(1), P. 257 - 273

Published: April 16, 2021

Language: Английский

Citations

22
Warming significantly inhibited the competitive advantage of native plants in interspecific competition under phosphorus deposition DOI
Miaomiao Cui, Jingjing Wang, Xuefeng Zhang

et al.

Plant and Soil, Journal Year: 2023, Volume and Issue: 486(1-2), P. 503 - 518

Published: Feb. 6, 2023

Language: Английский

Citations

8
Estudos em Biociências e Biotecnologia: Desafios, Avanços e Possibilidades II DOI Open Access
Manuel Simões

Editora Artemis eBooks, Journal Year: 2023, Volume and Issue: unknown

Published: May 29, 2023

capítulos 3 a 6); produção e proteção de alimentos (capítulos 7 9); ambiente biorrecursos 10 12).

Citations

8
Litter Quality Is a Stronger Driver than Temperature of Early Microbial Decomposition in Oligotrophic Streams: a Microcosm Study DOI Creative Commons
Javier Pérez, Verónica Ferreira, Manuel A. S. Graça

et al.

Microbial Ecology, Journal Year: 2021, Volume and Issue: 82(4), P. 897 - 908

Published: Sept. 27, 2021

Litter decomposition is an ecological process of key importance for forest headwater stream functioning, with repercussions the global carbon cycle. The directly and indirectly mediated by microbial decomposers, mostly aquatic hyphomycetes, influenced environmental biological factors such as water temperature litter quality. These two are forecasted to change globally within next few decades, in ways that may have contrasting effects on microbial-induced decomposition: while warming expected enhance performance, reduction quality due increased atmospheric dioxide community composition alteration opposite outcome. We explored this issue through a microcosm experiment focused early microbial-mediated under oligotrophic conditions, simultaneously manipulating (10 °C 15 °C) (12 broadleaf plant species classified into 4 categories based initial concentrations nitrogen tannins). assessed potential changes performance fungal decomposers (i.e., respiration, biomass accrual, sporulation rate) richness. found stronger quality, which enhanced rates, than temperature, barely any studied variables. Our results suggest poorer associated will major repercussion ecosystem functioning.

Language: Английский

Citations

20
Invasion of temperate riparian forests by Acacia dealbata affects macroinvertebrate community structure in streams DOI Open Access
Silvia Gómez-Arcusa,

Nuno Coimbra,

Verónica Ferreira

et al.

Limnetica, Journal Year: 2024, Volume and Issue: 44(1), P. 1 - 1

Published: Jan. 26, 2024

The riparian forest determines many of the stream characteristics such as physicochemical variables and availability quality food resources for aquatic communities. In central Portugal, native mixed deciduous forests are being heavily invaded by Acacia dealbata, which is an evergreen nitrogen-fixing tree species, but effects on benthic macroinvertebrate communities unknown. We assessed invasion comparing streams flowing through (native streams) A. dealbata (invaded streams), in Portugal. did not find major differences abundance, total taxa richness or diversity between streams, due to high variation among streams. However, taxonomic structure differed types, with showing lower percentage sensitive taxa. Macroinvertebrate based functional feeding groups also a tendency higher abundance shredders scrapers/grazers filter feeders than probably altered composition leaf litter inputs canopy cover within Our findings suggest that affect community mostly terms structure. Since rapidly spreading all southern Europe, this study highlights importance enhancing comprehension its impact identify ecological risks formulate effective mitigation strategies.

Language: Английский

Citations

1
Changes in decomposition dynamics, soil community function and the growth of native seedlings under the leaf litter of two invasive plants DOI
Pablo Souza‐Alonso,

Alejandra Guisande‐Collazo,

Yaiza Lechuga-Lago

et al.

Biological Invasions, Journal Year: 2024, Volume and Issue: 26(11), P. 3695 - 3714

Published: Aug. 12, 2024

Language: Английский

Citations

1
Regeneration of Riparian and Maritime Pine Forests after a Large Wildfire on the Largest Public Forest of Portugal DOI Open Access
Francisca C. Aguiar, Carolina Rodrigues,

João Pedro Pina

et al.

Forests, Journal Year: 2021, Volume and Issue: 12(4), P. 477 - 477

Published: April 14, 2021

Eighty-six percent of the largest Portuguese public forest, Leiria National Forest (Mata Nacional de Leiria—MNL), central west, was burned in a wildfire October 2017. Most area covered by maritime pine stands (Pinus pinaster Aiton) crossed riparian forests along small-sized streams. This work aims to characterize post-fire vegetation and evaluate its natural regeneration. Sampling carried out c. 6 months after fire 28 plots distributed at (3.5 × 3.5 m2) 24 (5 20 stream channels riverbanks. These latter surveys were repeated 2019. Data include floristic composition cover data streams, number seedlings. Six fire, 60% 93% pre-fire species observed streams stands, respectively. Fire severity not related differences flora composition, nor with richness. Pine seedlings significantly more abundant >60 years old compared younger (<25 y) but no significant regeneration understory. On landscapes, germination resprouting invasive exotic species, such as Acacia sp., created dense formations decreased native plant diversity altered ecosystem structure. Following large wildfires, one MNL, managers should prioritize preserving potential soil aerial seed banks.

Language: Английский

Citations

10
Invasive forest pathogens affect the characteristics, microbial colonisation, and decomposition of leaf litter in streams DOI
Verónica Ferreira,

Laryssa H. R. Pazianoto,

Alejandro Solla

et al.

Freshwater Biology, Journal Year: 2021, Volume and Issue: 67(2), P. 416 - 429

Published: Nov. 24, 2021

Abstract Invasive tree pathogens threaten forests worldwide, but their effects on streams are poorly understood. Nevertheless, infections that lead to changes in the characteristics of litter inputs may affect stream communities and ecosystem processes. We studied cross‐ecosystem derived from Phytophthora cinnamomi , × alni Ophiostoma novo‐ulmi infection Castanea sativa (chestnut), Alnus lusitanica (alder), Ulmus minor (elm) trees, respectively, by assessing physical chemical senescent leaves healthy, symptomatic, highly symptomatic individuals. Leaf three health statuses per species was then incubated laboratory microcosms microbial decomposers leaf decomposition were assessed. Tree significantly affected characteristics, decomposition, status trees conditioned these differently depending species. In C. had higher toughness, polyphenolic concentration slower than healthy trees. A. phosphorus concentration, lower carbon:phosphorus ratio faster Finally, U. nitrogen carbon:nitrogen Effects mediated decomposer colonisation activity. The composition aquatic hyphomycetes associated with varied status. Most striking two‐fold richness infected O. alters nutritional quality litter, potentially affecting functioning ecosystems strongly dependent riparian inputs.

Language: Английский

Citations

8
Bases para el manejo adaptativo de la leñosa invasora Acacia melanoxylon (Fabaceae) en la Reserva Natural Privada Paititi, sierras del Sistema de Tandilia, Argentina DOI Creative Commons
Silvia Clarisa Zaninovich, Lorena Herrera, Nicolás Carro

et al.

Boletín de la Sociedad Argentina de Botánica, Journal Year: 2023, Volume and Issue: 58(1)

Published: March 22, 2023

Introducción y objetivos: Acacia melanoxylon (acacia australiana) es una especie exótica invasora que se encuentra en expansión sobre relictos de comunidades nativas la Reserva Natural Privada Paititi (Sistema Tandilia, Argentina). El objetivo este trabajo fue diseñar un plan manejo adaptativo para contener el avance esta especie. M&M: Se cuantificó área invadida entre 2003 2020 describió estructura poblaciones A. parcelas con dos diferentes tiempos invasión: reciente antigua. identificaron impactos negativos, positivos neutros invasión propusieron estrategias gestión impactos. Resultados: detectó 23,3 ha los ambientes nativos 17 años. basal individuos similar sitios invadidos diferente tiempo transcurrido (18,3 m2 ha-1). Sin embargo, densidad mayor recientemente antigua (3205 965 ha-1, respectivamente). 26 impactos, siendo 73% ecológicos formuló propuesta siete pasos. Conclusiones: Estos resultados permiten comenzar a comprender dinámica planificar melanoxylon. Aunque utilizó reserva como caso estudio, puede proyectarse otras áreas invadidas Tandilia. logro eficaz efectivo del invasión, conservación recuperación requerirá ejecutar colaborativas actores sociales implicados proceso manejo.

Citations

3
AustralianAcaciaSpecies Around the World: Historical, Social, Evolutionary and Ecological Insights into One of the Planet’s Most Widespread Plant Genera DOI
David M. Richardson, Elizabete Marchante, Johannes J. Le Roux

et al.

CABI eBooks, Journal Year: 2023, Volume and Issue: unknown, P. 1 - 26

Published: Nov. 13, 2023

Acacia is the largest and most widespread genus of plants in Australian flora, occupying often dominating a wide range habitats on that continent exhibiting an equally diverse forms life-history traits. All but 17 currently recognized 1082 species have native ranges entirely within Australia. Many ('wattles') been introduced to other parts world planted for many purposes since 18th century; at least 41% all wattle are known occur as non-native 172 countries. Some commercially important forestry trees, others widely sand stabilization or revegetation, used different agroforestry, ornamentals, provide benefits. At 75 established self-sustaining populations outside their 28 invasive, cases causing substantial ecological socio-economic impacts. This chapter provides background context 30 chapters this book explore numerous aspects history, biogeography, sociology, ecology evolution around world.

Language: Английский

Citations

3