Physiology of the Rocky Intertidal Predator Nucella ostrina along an Environmental Stress Gradient

Ecology ◽  
2001 ◽  
Vol 82 (10) ◽  
pp. 2816 ◽  
Author(s):  
Elizabeth P. Dahlhoff ◽  
Bradley A. Buckley ◽  
Bruce A. Menge
Keyword(s):  
Environmental Stress ◽  
Stress Gradient ◽  
Rocky Intertidal ◽  
Nucella Ostrina

PHYSIOLOGY OF THE ROCKY INTERTIDAL PREDATORNUCELLA OSTRINAALONG AN ENVIRONMENTAL STRESS GRADIENT

Ecology ◽  
2001 ◽  
Vol 82 (10) ◽  
pp. 2816-2829 ◽  
Author(s):  
Elizabeth P. Dahlhoff ◽  
Bradley A. Buckley ◽  
Bruce A. Menge
Keyword(s):  
Environmental Stress ◽  
Stress Gradient ◽  
Rocky Intertidal

Indirect effects and facilitation among native and non-native species promote invasion success along an environmental stress gradient

2013 ◽  
Vol 101 (4) ◽  
pp. 905-915 ◽  
Author(s):  
Phoebe L. Zarnetske ◽  
Tarik C. Gouhier ◽  
Sally D. Hacker ◽  
Eric W. Seabloom ◽  
Vrushali A. Bokil
Keyword(s):  
Environmental Stress ◽  
Indirect Effects ◽  
Native Species ◽  
Stress Gradient ◽  
Invasion Success

Patterns of plant invasion along an environmental stress gradient

2006 ◽  
Vol 17 (1) ◽  
pp. 47-56 ◽  
Author(s):  
A.S. MacDougall ◽  
J. Boucher ◽  
R. Turkington ◽  
G.E. Bradfield
Keyword(s):  
Environmental Stress ◽  
Plant Invasion ◽  
Stress Gradient

scholarly journals Consumer mobility predicts impacts of herbivory across an environmental stress gradient

Ecology ◽  
2019 ◽  
Vol 101 (1) ◽  
Author(s):  
Robert W. Lamb ◽  
Franz Smith ◽  
Jon D. Witman
Keyword(s):  
Environmental Stress ◽  
Stress Gradient

scholarly journals Precipitation thresholds and drought-induced tree die-off: insights from patterns ofPinus edulismortality along an environmental stress gradient

2013 ◽  
Vol 200 (2) ◽  
pp. 413-421 ◽  
Author(s):  
Michael J. Clifford ◽  
Patrick D. Royer ◽  
Neil S. Cobb ◽  
David D. Breshears ◽  
Paulette L. Ford
Keyword(s):  
Environmental Stress ◽  
Stress Gradient ◽  
Precipitation Thresholds

Inducible versus constitutive antioxidant defenses in algae along an environmental stress gradient

2020 ◽  
Vol 640 ◽  
pp. 107-115
Author(s):  
KL Van Alstyne ◽  
L Sutton ◽  
SA Gifford
Keyword(s):  
Environmental Stress ◽  
Stress Gradient ◽  
Marine Macroalgae ◽  
Antioxidant Defenses ◽  
Inducible Defenses ◽  
Signaling Mechanism ◽  
Oxidative Stresses ◽  
Intertidal Species ◽  
Ulva Fenestrata ◽  
Antiherbivore Defenses

Optimal defense theory (ODT) predicts that antiherbivore defenses should be constitutive when plants are frequently attacked and inducible when the probability of attack is low. Like antiherbivore defenses, antioxidant defenses can be inducible or constitutive. We hypothesized the ODT predictions should apply to antioxidant defenses; thus, species inhabiting environments where oxidative stresses occur frequently should produce constitutive antioxidant defenses, whereas species in environments where stresses occur less frequently should produce inducible defenses. We tested this hypothesis by attempting to induce production of the antioxidant precursor dimethylsulfoniopropionate (DMSP) in 4 ulvoid algae species that experience different levels of environmental stress because they are zoned along a tidal gradient. The 2 lower intertidal species Ulvaria obscura and Ulva fenestrata, which experience oxidative stresses less frequently, induced DMSP production in response to applications of the chemical oxidant hydrogen peroxide within 7 d, whereas the higher intertidal species Ulva linza and Ulva intestinalis, which regularly experience oxidative stress, did not have increased DMSP concentrations. This study demonstrates a novel waterborne signaling mechanism for DMSP induction in marine macroalgae and provides evidence of selection for inducible antioxidant defenses in organisms experiencing less frequent environmental stresses.

Woodland recovery following drought-induced tree mortality across an environmental stress gradient

2015 ◽  
Vol 21 (10) ◽  
pp. 3685-3695 ◽  
Author(s):  
Miranda D. Redmond ◽  
Neil S. Cobb ◽  
Michael J. Clifford ◽  
Nichole N. Barger
Keyword(s):  
Environmental Stress ◽  
Tree Mortality ◽  
Stress Gradient

The utility of wax replicas as a measure of crab attack frequency in the rocky intertidal

2014 ◽  
Vol 95 (2) ◽  
pp. 361-369 ◽  
Author(s):  
Carrie L. Tyler ◽  
E.S. Stafford ◽  
L.R. Leighton
Keyword(s):  
Vital Role ◽  
Rocky Intertidal ◽  
Commercial Fishing ◽  
Exact Nature ◽  
Attack Frequency ◽  
Predator Prey ◽  
Predation Intensity ◽  
Nucella Ostrina ◽  
Natural Settings ◽  
Crab Predation

Crabs are thought to play a vital role in structuring gastropod populations. Studies quantifying the frequencies with which crabs attack gastropods in natural settings are, however, scarce. Although a wide variety of techniques exist with which predator–prey interactions can be investigated (e.g. laboratory experiments, exclusion caging, tethering and population surveys), there is a need for methods that can provide large amounts of quantitative data, particularly documenting the frequency with which crabs attack gastropods. This study examines the utility of using wax replicas of gastropods to determine crab attack frequencies. Replicas ofChlorostoma funebralis, Nucella ostrinaandNucella lamellosawere bolted to mesh screens and deployed in the rocky intertidal. Crabs attacked wax replicas of gastropods, leaving characteristic marks in the wax. In most cases, the appendage used in the attack could be identified from the marks (i.e. chelae vs walking legs). The effectiveness of this technique was verified using surveys of repair scar frequencies of the gastropod populations; patterns in attack frequency, determined from the number of marked wax replicas, were consistent with those of repair frequency, in that both were greater at the wave protected, quiet water locality. This study confirms the value of wax replicas in investigations of crab predation to determine the frequency and type of attack, and illustrates the potential of this method for quantifying predation intensity. The development of techniques that quantify the magnitude and exact nature of the effects of crab predation on intertidal communities is pivotal, given the intensity of commercial fishing of some species of crabs.

scholarly journals Species richness and diversity across rocky intertidal elevation gradients in Helgoland: testing predictions from an environmental stress model

2010 ◽  
Vol 65 (2) ◽  
pp. 91-102 ◽  
Author(s):  
Ricardo A. Scrosati ◽  
Amanda S. Knox ◽  
Nelson Valdivia ◽  
Markus Molis
Keyword(s):  
Species Richness ◽  
Environmental Stress ◽  
Rocky Intertidal ◽  
Stress Model ◽  
Elevation Gradients ◽  
Species Richness And Diversity
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