site stats

The latitudinal herbivory defense hypothesis

SpletStevens used the rule to "explain" greater species diversity in the tropics in the sense that latitudinal gradients in species diversity and the rule have identical exceptional data and so must have the same underlying cause. Narrower ranges in the tropics would facilitate more species to coexist. SpletEqual area Behrmann projection, 96 km × 96 km resolution small clutch sizes for its latitudinal range and seasonality, and little African lizards do increase with temperature seasonality, no factor within-continent variation (Figure 3, but see Supporting Information except body mass (Hypothesis 6) emerged as related to lizard clutch Figure S1).

Sources of Controversy Surrounding Latitudinal Patterns in …

Splet10. apr. 2012 · The Optimal Defence Theory (ODT) revolves around the idea that the tissues most vulnerable to herbivores and most valuable to the plant should be the best defended. This means that in a nutrient-limited environment, the costs of replacing damaged tissues are greater, and that plants in this environment will be constitutively well protected. SpletIn this study, tests of the latitudinal defense hypothesis show no we assessed herbivory and measured foliar tannin consistent trend. concentrations of four North American trees along a We chose to test the predictions of the latitudinal latitudinal transect. herbivory theory in several species of North American trees, sampled at several points … indigo career ground staff https://clarionanddivine.com

The global diversity and distribution of lizard clutch sizes

SpletLatitudinal patterns in biotic interactions, including herbivory, have been widely debated during the past years. In particular, recent meta-analysis questioned the hypothesis that herbivory increases from the poles towards the equator. Our study was designed to verify this hypothesis by exploring latitudinal patterns in abundance and diversity ... Splet01. avg. 2011 · In accordance with the latitudinal herbivory-defense (LHD) hypothesis (Johnson and Rasmann, 2011), plants' defensive chemistry should also follow the same … SpletAbstract Many groups of extinct and extant organisms have aggregated to form reefs for over 3.5 billion yr (Ga). Most of these communities, however, grew under ecological and environmental controls profoundly different from those that govern modern coral reefs. Not only has the global distribution of reefs varied considerably through geological … lockwood ash disposal site

HERBIVORY AND PLANT DEFENSES IN TROPICAL FORESTS

Category:Rapoport

Tags:The latitudinal herbivory defense hypothesis

The latitudinal herbivory defense hypothesis

Atmosphere Free Full-Text The Effects of Ozone on Herbivore …

Splet16. jul. 2024 · Integrating these theories with the Latitudinal Biotic Interaction Hypothesis can provide a foundation for understanding the spatial heterogeneity of plant invasions … SpletThe Apparency Hypothesis suggests that plant species that are more “apparent” (long-lived, large, evergreen) to herbivores have evolved stronger anti-herbivore defenses than not-so-apparent plants (short-lived, small, deciduous), but empirical tests of this hypothesis have yielded inconsistent results.

The latitudinal herbivory defense hypothesis

Did you know?

SpletWe experimentally assessed (1) the presence of genetic variance in tolerance, total resistance, and leaf trichome density as specific defense trait, (2) the extent of natural selection acting on plant defenses, and (3) the relationship between total resistance and leaf trichome density with tolerance to herbivory in the annual herb Datura ... Splet19. mar. 2024 · In the early 1990s, the latitudinal herbivory hypothesis (LHH) was proposed to explain why the herbivory and plant defense is greater in lower latitudinal areas than in higher latitudinal areas, which is the primary reason for the maintenance of a higher … Ecology and Evolution is a broad-scope open access journal. All research in ecolo…

Splet13. apr. 2024 · 摘要：（问题陈述）The Latitudinal Defense Hypothesis predicts that levels of defense are highest near the equator and decrease toward the poles. This hypothesis is based mainly on insect herbivory that occurs during the summer. Mammilian herbivory in the winter is a more likely driver of plant defense levels in northern latitudes. Splet06. okt. 2024 · Agricultural losses brought about by insect herbivores can be reduced by understanding the strategies that plants use against insect herbivores. The two main strategies that plants use against herbivory are resistance and tolerance. They are, however, predicted to be mutually exclusive, yet numerous populations have them both …

SpletAbstract In this review, we discuss the ecological and evolutionary consequences of plant-herbivore interactions in tropical forests. We note first that herbivory rates are higher in tropical forests than in temperate ones and that, in contrast to leaves in temperate forests, most of the damage to tropical leaves occurs when they are young and expanding. … Spletdrivers for natural ecosystems, and herbivory is thus considered as a key component of terrestrial food webs. In the early 1990s, the lati-tudinal herbivory hypothesis (LHH) was …

Splet07. apr. 2016 · The simplest explanation for the lack of a latitudinal gradient in defence in this study (and others like it) is that the lack of a general relationship between latitude and herbivory means that there is not consistently higher selection pressure for higher defence at lower latitudes.

Splet11. sep. 2008 · One prediction of this theory is that plants should tend to be better defended at lower latitudes. Here we investigated latitudinal trends in herbivory and tannins, in four … lockwood apartments waterford miSplet02. jun. 2016 · Knowledge of latitudinal patterns in plant defense and herbivory is crucial for understanding the mechanisms that govern ecosystem functioning and for predicting … lockwood armorySpletThe latitudinal herbivory defense hypothesis (LHDH) postulates that the prevalence of species interactions, including herbivory, is greater at lower latitudes, leading to selection for increased levels of plant defense. indigo careers job vacancyindigo card offersSpletThe latitudinal herbivory-defense hypothesis (LHDH) predicts that plants near the equator will be more heavily defended against herbivores than are plants at higher latitudes. … lockwood appliance repairSplet11. sep. 2008 · One prediction of this theory is that plants should tend to be better defended at lower latitudes. Here we investigated latitudinal trends in herbivory and tannins, in four species of common North American trees. Our comparisons spanned 15° of latitude in Acer rubrum, Fagus grandifolia, and Quercus alba, and 10° latitude in Liquidambar styraciflua. lockwood arms apartments reginaSplet01. okt. 2016 · The Latitudinal Herbivory-Defense Hypothesis Researchers long have argued that biotic interactions are stronger at equatorial latitudes (see Glossary ), such … indigo cargo booking