Journal ArticleDOI
Progress toward understanding the ecological impacts of nonnative species
Reads0
Chats0
TLDR
19 testable hypotheses that explain temporal and spatial variation in impact are identified and reviewed and highlight the importance of the functional ecology of the nonnative species and the structure, diversity, and evolutionary experience of the recipient community as general determinants of impact.Abstract:
A predictive understanding of the ecological impacts of nonnative species has been slow to develop, owing largely to an apparent dearth of clearly defined hypotheses and the lack of a broad theoretical framework. The context dependency of impact has fueled the perception that meaningful generalizations are nonexistent. Here, we identified and reviewed 19 testable hypotheses that explain temporal and spatial variation in impact. Despite poor validation of most hypotheses to date, evidence suggests that each can explain at least some impacts in some situations. Several hypotheses are broad in scope (applying to plants and animals in virtually all contexts) and some of them, intriguingly, link processes of colonization and impact. Collectively, these hypotheses highlight the importance of the functional ecology of the nonnative species and the structure, diversity, and evolutionary experience of the recipient community as general determinants of impact; thus, they could provide the foundation for a theoretical framework for understanding and predicting impact. Further substantive progress toward this goal requires explicit consideration of within-taxon and across-taxa variation in the per capita effect of invaders, and analyses of complex interactions between invaders and their biotic and abiotic environments.read more
Citations
More filters
Journal ArticleDOI
“Perchance to dream?”: Assessing the effects of dispersal strategies on the fitness of expanding populations
TL;DR: In this paper , the authors compare the ecological success of three movement and habitat selection strategies (MHSSs): (i) Smart, in which animals choose the locally optimal cell; (ii) Random and (iii) Dreamer, where animals attempt to find a habitat of dream whose quality is much higher than that of the habitat available on the map.
Resistencia biótica vs resistencia abiótica: el caso de las arañas urbanas en Chile
TL;DR: In this article, no se encontro un efecto of la comunidad nativa sobre la riqueza de especies exoticas, pero si existe un eecto negativo relacionado with el clima (latitud).
Journal ArticleDOI
Waterbodies in the Floodplain of the Drava River Host Species-Rich Macrophyte Communities despite Elodea Invasions
TL;DR: In this article , the presence, relative abundance, and growth forms of plant species along with selected environmental parameters were monitored in natural and man-made waterbodies located on the active floodplain along the Drava river (Slovenia).
Peer Review
S0025315422000315jrv 3..26
TL;DR: In this paper , a systematic review was conducted to identify relevant research about the impact of alien polychaete species around the world, using the PRISMA (Preferred Reporting Items for Systematic reviews and Meta-Analysis) guide.
Journal ArticleDOI
Examining the performance of three ballast water compliance monitoring devices for quantifying live organisms in both regulated size classes (≥50 μm and ≥10–<50 μm)
TL;DR: In this article , a number of compliance monitoring devices (CMDs) have been made commercially available to verify the efficacy of ballast water management systems by quantifying the living organisms for both plankton size classes (≥50 μm and <10 − < 50 μm).
References
More filters
Journal ArticleDOI
Mechanisms of Maintenance of Species Diversity
TL;DR: Stabilizing mechanisms are essential for species coexistence and include traditional mechanisms such as resource partitioning and frequency-dependent predation, as well as mechanisms that depend on fluctuations in population densities and environmental factors in space and time.
Journal ArticleDOI
The metacommunity concept: a framework for multi-scale community ecology
Mathew A. Leibold,Marcel Holyoak,Nicolas Mouquet,Nicolas Mouquet,Priyanga Amarasekare,Jonathan M. Chase,Martha F. Hoopes,Robert D. Holt,Jonathan B. Shurin,Richard Law,David Tilman,Michel Loreau,Andrew Gonzalez +12 more
TL;DR: This framework is used to discuss why the metacommunity concept is useful in modifying existing ecological thinking and illustrate this with a number of both theoretical and empirical examples.
Journal ArticleDOI
The Ecology of Invasions by Animals and Plants.
P. W. Richards,Charles Elton +1 more
Journal ArticleDOI
Resource Availability and Plant Antiherbivore Defense
TL;DR: Resource availability in the environment is proposed as the major determinant of both the amount and type of plant defense, and theories on the evolution of plant defenses are compared with other theories.
Journal ArticleDOI
A General Hypothesis of Species Diversity
TL;DR: A new hypothesis, based on differences in the rates at which populations of competing species approach competitive equilibrium (reduction or exclusion of some species), is proposed to explain patterns of species diversity.