The ecology of focal forage fish and its influence on marine predators

焦点饲料鱼的生态及其对海洋捕食者的影响

基本信息

  • 批准号:
    RGPIN-2019-05385
  • 负责人:
  • 金额:
    $ 2.4万
  • 依托单位:
  • 依托单位国家:
    加拿大
  • 项目类别:
    Discovery Grants Program - Individual
  • 财政年份:
    2020
  • 资助国家:
    加拿大
  • 起止时间:
    2020-01-01 至 2021-12-31
  • 项目状态:
    已结题

项目摘要

The long-term objective of my research program is to investigate recruitment dynamics of key forage fish species and how these dynamics shape trophic and food web interactions in marine ecosystems of northern Canada. Unlike terrestrial systems, marine food webs are uniquely under “wasp-waist” control, whereby most energy is funnelled through a few forage fish species, making these species critical to energy flow. Capelin is the focal forage fish species that preys on many invertebrates and is in turn preyed on by most large predators (i.e., fish, whales, seabirds) in northern marine ecosystems and, thus, is often thought to mediate ecosystem-level changes. These short-lived fish species are characterized by high natural fluctuations in population size (~±40%), driven by annual variability in the number of individuals surviving to reproduce, or recruitment. Mechanisms underlying recruitment dynamics are often unclear, in part due to a lack of hypothesis-driven research. My first short-term objective is to investigate the bio-physical factors (i.e., prey and predator densities, temperature, salinity) underlying capelin larval survival in the Canadian Arctic, where the abundance of this sub-Arctic species has increased dramatically in the last two decades. Within coastal Newfoundland, I also will quantify the relative contribution of spawning habitats and regions to recruitment in coastal Newfoundland using cutting-edge otolith chemistry techniques to identify the natal habitat of spawning capelin. As most vertebrate predators rely on capelin as prey, my second short-term objective is to manipulate the costs and benefits of group foraging under varying prey and predator conditions, using an experimental approach, to reveal the behavioural mechanisms underlying niche partitioning. Additionally, I will investigate predator foraging responses of multiple species to changing prey regimes, along with multi-dimensional niche overlap. Simultaneously investigating predator-prey relationships, species interactions during prey capture and niche overlap of multiple marine predators under dynamic prey regimes will determine whether interactions among predators obscure predator-prey functional relationships, and provide insight into food web responses to varying prey biomass along with mechanisms underlying these responses. Several long-term data sets will be integrated with short-term hypothesis-driven research, forming the basis of inter-related, field-based student theses. Overall, this research program supports a high level of HQP (3 B.Sc. field assistants, 5 B.Sc. Honours, 5 M.Sc., 3 Ph.D.), and will enhance our ability to maintain the long-term productivity of northern marine ecosystems to sustain fisheries yields and conserve marine biodiversity under a changing ocean climate.
我的研究计划的长期目标是调查关键饲用鱼类物种的补充动态,以及这些动态如何塑造加拿大北部海洋生态系统中的营养和食物网相互作用。与陆地系统不同,海洋食物网独特地处于“黄蜂腰部”控制之下,大部分能量通过少数饲料鱼物种输送,这使得这些物种对能量流动至关重要。Capelin是以许多无脊椎动物为食的重点饲料鱼物种,反过来又被北部海洋生态系统中的大多数大型捕食者(即鱼、鲸鱼、海鸟)捕食,因此常常被认为是调节生态系统水平变化的媒介。这些短命鱼种的特点是种群数量的高度自然波动(~±40%),这是由于存活繁殖或补充的个体数量的年度变化所致。招聘动态背后的机制往往不清楚,部分原因是缺乏以假设为导向的研究。我的第一个短期目标是调查加拿大北极地区山羊幼体生存的生物物理因素(即猎物和捕食者密度、温度、盐度),在过去20年里,这种亚北极物种的数量在那里急剧增加。在纽芬兰沿海,我还将使用尖端的耳石化学技术,量化产卵栖息地和地区对纽芬兰沿海招募的相对贡献,以确定产卵海豚的出生栖息地。由于大多数脊椎动物捕食者依赖海豚作为猎物,我的第二个短期目标是利用实验方法,操纵在不同猎物和捕食者条件下群体觅食的成本和收益,以揭示生态位划分背后的行为机制。此外,我还将研究不同物种捕食者对不断变化的捕食者制度的反应,以及多维生态位重叠。同时研究捕食者-猎物关系、捕食过程中的物种相互作用以及动态捕食制度下多个海洋捕食者之间的生态位重叠,将确定捕食者之间的相互作用是否掩盖了捕食者-猎物功能关系,并提供对不同猎物生物量的食物链反应以及这些反应背后的机制的洞察。几个长期数据集将与短期假设驱动的研究相结合,形成相互关联的、基于领域的学生论文的基础。总体而言,该研究计划支持高水平的HQP(3 B.Sc.外勤助理,5名B.S.C.并将增强我们维持北部海洋生态系统长期生产力的能力,以在不断变化的海洋气候下维持渔业产量和养护海洋生物多样性。

项目成果

期刊论文数量(0)
专著数量(0)
科研奖励数量(0)
会议论文数量(0)
专利数量(0)

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

数据更新时间:{{ journalArticles.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ monograph.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ sciAawards.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ conferencePapers.updateTime }}

{{ item.title }}
  • 作者:
    {{ item.author }}

数据更新时间:{{ patent.updateTime }}

Davoren, Gail其他文献

Davoren, Gail的其他文献

{{ item.title }}
{{ item.translation_title }}
  • DOI:
    {{ item.doi }}
  • 发表时间:
    {{ item.publish_year }}
  • 期刊:
  • 影响因子:
    {{ item.factor }}
  • 作者:
    {{ item.authors }}
  • 通讯作者:
    {{ item.author }}

{{ truncateString('Davoren, Gail', 18)}}的其他基金

The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    RGPIN-2019-05385
  • 财政年份:
    2022
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    305483-2019
  • 财政年份:
    2021
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
The ecology of forage fish and interactions with marine predators
饲料鱼的生态学及其与海洋捕食者的相互作用
  • 批准号:
    556539-2021
  • 财政年份:
    2021
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Ship Time
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    RGPIN-2019-05385
  • 财政年份:
    2021
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    305483-2019
  • 财政年份:
    2020
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    305483-2019
  • 财政年份:
    2019
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    RGPIN-2019-05385
  • 财政年份:
    2019
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
The ecology of forage fish species and interactions with marine predators
饲料鱼的生态学及其与海洋捕食者的相互作用
  • 批准号:
    531427-2019
  • 财政年份:
    2019
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Ship Time
The ecology of forage fish species and interactions with marine predators
饲料鱼的生态学及其与海洋捕食者的相互作用
  • 批准号:
    515517-2018
  • 财政年份:
    2018
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Ship Time
The ecology of forage fish species and interactions with marine predators
饲料鱼的生态学及其与海洋捕食者的相互作用
  • 批准号:
    RGPIN-2014-06290
  • 财政年份:
    2018
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual

相似国自然基金

CAV2/CAV1通过调节Focal adhesion信号通路抑制鼻咽癌放疗抵抗的机制研究
  • 批准号:
    JCZRLH202500859
  • 批准年份:
    2025
  • 资助金额:
    0.0 万元
  • 项目类别:
    省市级项目
IQGAP1通过Hax1-EB2复合体调控细胞迁移的分子机制研究
  • 批准号:
    31801173
  • 批准年份:
    2018
  • 资助金额:
    27.0 万元
  • 项目类别:
    青年科学基金项目
PEAK1通过FAK-CTTN-Arp2/3信号调控细胞迁移的分子机制研究
  • 批准号:
    31701218
  • 批准年份:
    2017
  • 资助金额:
    25.0 万元
  • 项目类别:
    青年科学基金项目

相似海外基金

The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    305483-2019
  • 财政年份:
    2022
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    RGPIN-2019-05385
  • 财政年份:
    2022
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    305483-2019
  • 财政年份:
    2021
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    RGPIN-2019-05385
  • 财政年份:
    2021
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    305483-2019
  • 财政年份:
    2020
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    305483-2019
  • 财政年份:
    2019
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Northern Research Supplement
The ecology of focal forage fish and its influence on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    RGPIN-2019-05385
  • 财政年份:
    2019
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
The ecology of focal forage fish species and its impact on marine predators
重点饲料鱼种的生态及其对海洋捕食者的影响
  • 批准号:
    283212-2007
  • 财政年份:
    2013
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Individual
The ecology of focal forage fish and its impact on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    436824-2013
  • 财政年份:
    2013
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Ship Time
The ecology of focal forage fish and its impact on marine predators
焦点饲料鱼的生态及其对海洋捕食者的影响
  • 批准号:
    419835-2012
  • 财政年份:
    2012
  • 资助金额:
    $ 2.4万
  • 项目类别:
    Discovery Grants Program - Ship Time
{{ showInfoDetail.title }}

作者:{{ showInfoDetail.author }}

知道了