Search research articles

ABOUT JoVE

Overview Leadership Blog JoVE Help Center

AUTHORS

Publishing Process Editorial Board Scope & Policies Peer Review FAQ Submit

LIBRARIANS

Testimonials Subscriptions Access Resources Library Advisory Board FAQ

RESEARCH

JoVE Journal Methods Collections JoVE Encyclopedia of Experiments Archive

EDUCATION

JoVE Core JoVE Business JoVE Science Education JoVE Lab Manual Faculty Resource Center Faculty Site

Terms & Conditions of Use

Related Concept Videos

Marine Microbial Ecology

Marine Microbial Ecology

Marine microbial ecosystems are shaped by distinct physicochemical limits, including high salinity, low nutrient availability, and fluctuating oxygen levels. These conditions favor smaller microbial cell sizes, which maximize their surface-to-volume ratio for efficient nutrient uptake.Microbial activity and community composition are closely linked to biogeochemical cycles, particularly in dynamic environments like estuaries, where halotolerant microbes thrive in response to variable salinity...

Diversity of Protists III

Diversity of Protists III

Rhizaria are a diverse group of unicellular protists characterized by their threadlike cytoplasmic extensions known as pseudopodia. These structures aid in both locomotion and feeding, giving Rhizaria an amoeboid appearance. Their amoeboid morphology once led to taxonomic confusion, but molecular phylogenetics has clarified their evolutionary placement and emphasized their shared use of pseudopodia despite divergent lineages.This clade comprises diverse lineages such as Chlorarachniophyta,...

Cancer Cell Migration through Invadopodia

Cancer Cell Migration through Invadopodia

Invadosome is a broad category of cell surface structures with proteolytic activity that degrades the extracellular matrix (ECM). Invadosomes are present in normal cell types, including macrophages, endothelial cells, and neurons, as well as tumor cells. Although the macrophage podosomes and tumor cell invadopodia are classified as invadosomes, they have different structures, molecular pathways, and functions. Podosomes are short structures that last for a few minutes. However, invadopodia can...

Deep Sea Microbial Ecology

Deep Sea Microbial Ecology

The deep ocean and its underlying sediments represent vast, largely unexplored microbial habitats that extend far beyond the sunlit photic zone. The photic (euphotic) zone typically spans the upper ~100–200 meters of pelagic waters in the open ocean, but its depth varies geographically and seasonally, where sufficient light supports photosynthetic life. Below this lies the deep sea, spanning roughly 1000–6000 meters (bathypelagic to abyssal zones), with deeper hadal trenches extending beyond...

Microbial Mats

Microbial Mats

Microbial communities forming biofilms and mats represent complex, spatially structured ecosystems where metabolic processes are stratified according to light, oxygen, and nutrient gradients. Biofilms are initial colonization stages, only a few millimeters thick, while mature microbial mats can reach centimeter-scale thickness and display intricate vertical organization. Their structural and functional heterogeneity allows microorganisms to occupy distinct ecological niches within a few...

Primary Production

Primary Production

The total amount of energy acquired by primary producers in an ecosystem is called gross primary production (GPP). However, of this energy, producers use some for metabolic processes, and some is lost as heat, decreasing the amount of energy available to the next trophic level. The remaining usable amount of energy is called the net primary productivity (NPP). In terrestrial ecosystems, NPP is driven by climate, while light penetration and nutrient availability drive NPP in aquatic ecosystems.

You might also read

Related Articles

Articles linked to this work by shared authors, journal, and citation graph.

Sort by

Same author

To leave or not to leave: a tiered assessment of the impacts of scale residue from decommissioned offshore oil and gas infrastructure in australia.

Annals of the ICRP·2026

Same author

Breakthrough innovation will be essential for scaling up marine macrophyte restoration and achieving targets.

Journal of phycology·2024

Same author

Reintroducing a keystone bioturbator can facilitate microbial bioremediation in urban polluted sediments.

Environmental pollution (Barking, Essex : 1987)·2023

Same author

Assessing the validity and sensitivity of microbial processes within a hydrodynamic model.

Water research·2022

Same author

Implications of bacterial mineralisation in aquatic ecosystem response models.

Water research·2021

Same author

Wastewater effluents cause microbial community shifts and change trophic status.

Water research·2021

Search research articles

Related Experiment Video

Updated: Jun 26, 2026

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Published on: May 28, 2007

Shallow moving structures promote marine invader dominance.

K A Dafforn¹, E L Johnston, T M Glasby

¹Evolution and Ecology Research Centre, School of Biological, Earth and Environmental Sciences, University of New South Wales, Sydney, Australia. k.dafforn@unsw.edu.au

|January 31, 2009

Summary

Artificial structures in urban estuaries favor invasive species. Shallow, moving structures like pontoons particularly enhance invader dominance over native species, impacting marine ecosystems.

More Related Videos

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

Assessing Intertidal Populations of the Invasive European Green Crab

Assessing Intertidal Populations of the Invasive European Green Crab

Published on: September 16, 2020

Related Experiment Videos

Last Updated: Jun 26, 2026

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Chemotactic Response of Marine Micro-Organisms to Micro-Scale Nutrient Layers

Published on: May 28, 2007

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Monitoring Spatial Segregation in Surface Colonizing Microbial Populations

Published on: October 29, 2016

Assessing Intertidal Populations of the Invasive European Green Crab

Assessing Intertidal Populations of the Invasive European Green Crab

Published on: September 16, 2020

Area of Science:

Marine ecology
Estuarine ecology
Urban ecology

Background:

Urban development leads to habitat modification in estuaries.
Artificial structures provide new habitats (hard substrata) that can be exploited by species.

Purpose of the Study:

To compare the early development of fouling assemblages on artificial structures.
To investigate the effects of structure movement and depth on native and non-indigenous epifauna.

Main Methods:

Settlement plates were attached to fixed and moving experimental structures.
Experiments were conducted at two depths: 0.5 m and 2 m.
Fouling assemblages were analyzed for native and invasive epifauna.

Main Results:

Invasive invertebrates were disproportionately more numerous on shallow, moving plates compared to deeper plates.
Native epifauna were less numerous than invaders across all treatments.
Individual invasive species exhibited varied responses to structure movement and depth.

Conclusions:

Shallow, moving structures (e.g., pontoons) can enhance the dominance of invasive species in estuarine environments.
Fixed structures may be a viable management strategy to reduce opportunities for invasive species.
Understanding species-specific responses to habitat modifications is crucial for effective management.