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    Ecological Explorations: From Dance to Dinosaurs

    uk dance graduates
    artist-led collectives
    dance agencies
    Created at: 16-11-2022
    Last updated: 26-12-2023
    1318
    Explore the wonders of nature with "Ecological Explorations: From Dance to Dinosaurs" playlist, featuring diverse perspectives on ecology and the environment. From the behavioral e...
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    Aitor Vázquez Veloso

    Sat Dec 23 2023

    Evaluation and validation of forest models: Insight from Mediterranean and scots pine models in Spain

    03:21

    This study deploys a useful methodology for evaluating and validating models. After comparing observed and predicted data, several case studies were then proposed to improve the accuracy of the joint model. We used the IBERO model, data from the Spanish National Forest Inventory and the SIMANFOR simulator platform. The accuracy of growth submodels was improved by calibrating their equations, though accuracy was not improved in survival and ingrowth submodels.

    Paul Thomas

    Thu Nov 23 2023

    Mycorrhizal fungi and invertebrates: Impacts on Tuber melanosporum ascospore dispersal and lifecycle by isopod mycophagy

    04:48

    Yesenia Ithaí Ángeles López

    Tue Nov 21 2023

    How the Colonization of the Host Plant by a Non-Insect Vector Affects the Fitness of a Plant Virus

    03:15

    Some plant viruses, like other parasites, such as the fungi that transform ants into zombies, can manipulate the physiology of their hosts, and also the behavior of their insect vectors. According to the “host manipulation hypothesis”, the changes in the host made by the parasite enhance the recruitment of the vectors and its transmission rate. But, what aspects of the host plant are manipulated by the plant virus? They change the aroma of the host plants and the levels of nutrients available for the insect vector, such as amino acids and sugars, and also alter the levels of hormones involved in the defense response of the host plant, facilitating the exploitation of resources by the insect vector. However, non-insect vectors can access the same resources. We wonder whether the attraction of a non-vector can feed back to the manipulating plant virus. To address this question, we used the tripartite interaction among the a non-vector whitefly, a begomovirus, and chili plants.

    Acaudio .

    Mon Oct 10 2022

    Dinosaur biodiversity declined well before the asteroid impact, influenced by ecological and environmental pressures

    01:53

    Background Non-avian dinosaurs went extinct 66 million years ago. The cause remains unresolved because of the coarseness of the fossil record. A sudden extinction caused by an asteroid is the most accepted hypothesis. However, it is debated whether dinosaurs were in decline or not before the impact. Methods The focus of this study was on species-rich, well known, and widespread Cretaceous dinosaur families. They were the major faunal elements until dinosaurs went extinct. There are four main criteria to select the dinosaur families to be analyzed. First, the family must have been a dominant component of the Cretaceous. The family must be a good representative of dinosaur macroevolutionary trends. Second, the family fossil record must have been well-represented in the last two stages of Late Cretaceous. Third, the family must be represented by a minimum number of 100 occurrences per family. Fourth, the family systematics and taxonomy should be sufficiently well known. Key findings Researchers investigated the influence of ecological and physical factors about the decline of dinosaurs. They found out that the decline was likely driven by global climate cooling and herbivorous diversity drop. The latter is likely due to hadrosaurs outcompeting other herbivores. Researchers also estimated that extinction risk is related to species age during the decline. This suggested a lack of evolutionary novelty or adaptation to changing environments. Conclusion These results support an environmentally driven decline of non-avian dinosaurs well before the asteroid impact. Researchers propose that a combination of global climate cooling and the diversity of herbivores were the likely reasons. Age-dependent extinctions also had a negative impact on dinosaur extinction in the Late Cretaceous.

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