Moving from the species to the population level in biological invasions

Global Change Biology, Год журнала: 2024, Номер 30(7)

Опубликована: Июль 1, 2024

Invasion scientists need to focus on the population level, not species if aiming unravel complexities of invasion dynamics at meaningful spatial and temporal scales contribute a more comprehensive understanding how invasive non‐native interact with impact ecosystems.

Язык: Английский

---

Non‐native species have higher consumption rates than their native counterparts

Biological reviews/Biological reviews of the Cambridge Philosophical Society, Год журнала: 2025, Номер unknown

Опубликована: Янв. 14, 2025

ABSTRACT Non‐native species can be major drivers of ecosystem alteration, especially through changes in trophic interactions. Successful non‐native have been predicted to greater resource use efficiency relative trophically analogous native (the Resource Consumption Hypothesis), but rigorous evidence remains equivocal. Here, we tested this proposition quantitatively a global meta‐analysis comparative functional response studies. We calculated the log ratio paired and responses, using attack rate maximum consumption parameters as variables. Explanatory variables were consumer taxonomic group feeding group, habitat, assemblage latitude, distinctiveness. Maximum rates for 70% higher, on average, than those their counterparts; also tended not significantly so. The magnitude effect sizes varied with being highest favour non‐natives molluscs herbivores. differences between freshwater taxa, perhaps reflecting sensitivity insular food webs novel consumers; pattern needs explored further additional data are obtained from terrestrial marine ecosystems. In general, our results support Hypothesis, which partly explain how successful reduce populations restructure webs.

Язык: Английский

---

The need of centralized coordination to counter biological invasions in the European Union

Environmental Sciences Europe, Год журнала: 2024, Номер 36(1)

Опубликована: Июль 8, 2024

Abstract Non-native species monitoring faces global challenges due to resource disparities, hindering effective implementation. Current strategies are fragmented and resource-dependent, inadequately addressing non-native dynamics subjected reporting biases, being further ridiculed by political borders. To overcome these challenges, a paradigm shift towards targeted, large-scale is crucial, requiring standardized protocols advanced technologies like environmental DNA analysis, orchestrated, applied—and enforced—following international collaboration. Despite existing efforts, networks, laws, even larger entities the European Union suffer from lack of information exchange as well economic, political, socio-cultural differences among member status, ultimately hampering united efforts against threat posed species. The absence comprehensive central hub authority, guided scientific input at same time empowered institution, emerges compelling solution. potential drawbacks, this possibly bridging gaps in approach, could coordinate standardize reporting, allocate resources, advocate increased funding. Considering rising introduction rates accelerating impacts species, creating centralized institution becomes imperative for enhancing management foster collaborative response threats.

Язык: Английский

---

Population Dynamics of the Exotic Flatworm Obama nungara in an Invaded Garden

Ecology and Evolution, Год журнала: 2025, Номер 15(1)

Опубликована: Янв. 1, 2025

ABSTRACT Population dynamics and the way abundance fluctuates over time may be key determinants of invasion success an introduced species. Fine‐scale temporal monitoring invasive species is rarely carried out due to difficulties in collecting data regularly a long period. Thanks collaboration amateur naturalist, unique dataset on land flatworm Obama nungara was obtained during 4‐year survey French private garden, where up 1585 O. were recorded 1 month. Daily revealed high population size fluctuations that explained by meteorological factors as well intra‐ inter‐specific interactions. Bayesian modeling confirmed nungara's depending temperature, humidity, precipitation. growth seems favored mild winters precipitation while it disadvantaged drought. These exogenous affect both directly this species, which sensitive desiccation, indirectly since they are known populations its prey (earthworms terrestrial gastropods). We also suggested important resilience site, able recover from drastic demographic bottleneck severe drought, systematic removal owner site. findings highlight potentially invasiveness raise concerns about major threat these flatworms pose their prey.

Язык: Английский

---

A comparative evaluation of haematological and biochemical parameters of Nemipterus randalli and Pagellus erythrinus species living in Gökova Bay, Türkiye

PeerJ, Год журнала: 2025, Номер 13, С. e18784 - e18784

Опубликована: Янв. 20, 2025

This study aims to determine and compare the reference values of haematological biochemical blood parameters two fish species collected from Gökova Bay (Muğla, South-Western Türkiye): non-native invasive Randall’s threadfin bream, Nemipterus randalli native Common pandora, Pagellus erythrinus . Both inhabit same environment compete for resources. Blood samples were a total 100 (50 N. 50 P. ) which caught depth 30 60 meters between February 2023 July 2024. Therefore, sampling could be carried out in summer winter seasons when water temperature varies significantly. The results indicate that red cell (RBC), haemoglobin (Hb) haematocrit (Hct) levels significantly increases ( p < 0.05). Statistical analyses revealed all are higher than In terms serum parameters, glucose (GLU), triglyceride (TRIG), cholesterol (CHOL), protein (TP), aspartate aminotransferase (AST) alkaline phosphatase (ALP) had showed no significant difference both > However, alanine (ALT) statistically different compared Additionally, highest lactate dehydrogenase (LDH) value was measured this found other groups Multidimensional scaling (MDS) analysis differences parameter individuals. provides important data about physiological adaptations environmental factors. similarity possibility distribute new habitats where is distributed. suggests further potential distribution need careful monitoring.

Язык: Английский

---

Conceptual and ethical considerations in invasion science

BioScience, Год журнала: 2025, Номер unknown

Опубликована: Янв. 21, 2025

Abstract Invasion science addresses interconnected ecological, economic, and social challenges posed by the introduction of nonnative species. Therefore, invasion scientists have to consider reconcile interdisciplinary needs while addressing potential implications their findings. Navigating diverse disciplines, including environmental sciences, ecology, economics, humanities, seek arrive at informed decisions on risk, impact, management. Individual biases, uncertainties, systemic pressures influence ability maintain objectivity resist that might otherwise distort findings or applications. In present commentary, we examine conceptual ethical dilemmas within field science, particularly reputational risks discipline perpetuating its own relevance framing invasions as insurmountable challenges. discussion, highlight how incentive structures, biased assessments framing, conflicts interest may compromise discipline's integrity. We also explore questions surrounding human responsibility animal welfare conundrums in management invasive

Язык: Английский

---

Colonizing the open sea: population dynamics of an abundant marine invader on a natural shoreline

Biological Invasions, Год журнала: 2025, Номер 27(2)

Опубликована: Янв. 24, 2025

Язык: Английский

---

Understanding biological invasions through the lens of environmental niches

Trends in Ecology & Evolution, Год журнала: 2025, Номер unknown

Опубликована: Фев. 1, 2025

Язык: Английский

---

Food fight: Gammarus tigrinus demonstrate competitive advantage over native G. duebeni

NeoBiota, Год журнала: 2025, Номер 97, С. 301 - 318

Опубликована: Фев. 28, 2025

Introductions of non-native species (NNS) are major drivers biodiversity loss. Gammarids (Crustacea, Gammaroidea) have been particularly successful in establishing and spreading their range, especially Europe. While impacts wide-ranging, interference competition with native has received limited study to date. Here, we assessed the competitive abilities North American NNS Gammarus tigrinus relative European duebeni , over a chironomid larva as single food resource. We staged four types dyadic contest encounters, individuals or added experimental arena containing resource, inter- intraspecific competitor upon first individual taking possession after 20 minutes. were more likely take hold bloodworm opening minutes, did so quickly than G. . During this period, they also less thigmotactic native, being explorative spending smaller proportion time outer zone arena. They exhibited aggressive interactions activity increasing size mass, whereas larger shown be active. found significantly lose conspecifics, similarly conspecifics. Overall, our findings indicate that behaviour ability demonstrated here add list traits facilitate its invasion success. In addition, method offers potential an effective, standardisable means assessing gammarid NNS. encourage future studies develop it further, incorporating alternative resources, such habitat, assess role ecologically relevant abiotic stressors determining outcomes.

Язык: Английский

---

Intrapopulation differences in biological traits and impacts in a highly invasive freshwater species

NeoBiota, Год журнала: 2025, Номер 97, С. 325 - 349

Опубликована: Март 5, 2025

Individual variation assessments are essential to better understand population and community dynamics, as well ecosystem functioning. Although researchers have long recognized this aspect, only recently has evidence accumulated about the ecological importance of within species. The incorporation individual provides an even more complete description effects a species may on ecosystems detailed knowledge can be especially important in context biological invasions. In study, we used invasion gradient signal crayfish Pacifastacus leniusculus Rabaçal River (NE Portugal) assess possible intrapopulation differences key traits evaluate changes impacts. For this, collected individuals from core front characterize several such abundance, size, sex-ratio, body condition, behaviour (i.e. boldness), trophic niche. addition, performed two laboratory experiments regarding consumption prey (gastropods), leaf mass loss, nutrients release. Signal lower larger, predominantly male, condition both sexes, exhibit increased boldness, higher δ 15 N 13 C values. experimental conditions, consumed gastropods leaves concentration nitrates phosphates water. Overall, different distinct impacts along studied river. Our study demonstrates relevance assessing invasive at level.  Graphical abstract

Язык: Английский

---