加拿大28开奖官网

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  tanjiuquanqiubianhuaxiaquyushengwuduoyangxingjiqishengtaixitonggongnengdeweichijizhihebaohuduiceshishengtaixue、shengwudilixuehebaohushengwuxuelingyuyanjiudezhongdaketi。jihequnluo(metacommunity)yongyuyanjiuquyuneiposuihuaqixidijingguanzhongshengwuduoyangxingheshengtaixitonggongnengdebianhuahexiangyingjizhi,danqitongchanghulvewuzhongjianxianghuzuoyongduiquyushengtaiguochengdeyingxiang。raner,yiwangyouguanzhongjianhuzuowangluoyanjiutongchangzhikaolvjuyuqunluozhongdewuzhongjianxianghuzuoyong,erhulvelekuaqixidibankuaideqianzaiwuzhongjianlianxi。shishishang,yixiewuzhongzaijuyuqunluozhijianjingchangfashengqianyikuosan,jiangquyuneijihequnluodeduogejuyuqunluotongguozhongjianhuzuowangluoerlianjiezaiyiqi,congergouchenglekongjianjihewangluo(spatial metanetwork),kedingyiweizhongjianhuzuodekongjianwangluo(spatial network of species interactions)。yinci,tongguozhenghejihequnluohezhongjianhuzuowangluokewangweilejieheyucejuyuhequyushengtaiguochengyushengtaigongnengzhijiandeneizaiguilvzheiyitiaozhanxingnantitigongkeneng。

  zhongguokexuedongwuyanjiusuoxiaozhishutuanduizaisichuandoujiangyanyaredaisenlinyishiguoniaoleiyuxianguozhiwuweiyanjiuxitongkaizhanyanjiufaxian,shiguodongwu(runiaolei)dezhongzichuanbozuoyongzaisenlingengxinzhongfahuilezhongyaozuoyong,tongshizaiquyushengwuduoyangxingjishengtaigongnengweichizhongyebanyanlejiweizhongyaodejiaose。zaiguoqi,senlinshengtaixitongdeguoshiziyuancunzaimingxiandechuizhifenceng,rutongyijieguoshuzaishuguanjidimianjunyoudaliangdechengshuguoshi。zheizhongguoshiziyuandechuizhifenbuweishushangheshuxiadeshiguodongwutigongshiwu,congerweishiguodongwudechuizhimishishengtaiweifenhuatigongkeneng(tu1)。yanjiufaxian,genjuchuizhikongjianshiguoniaoqushideweizhifenbu,kebashiguoniaoleifenwei3gemishigongnengqun: ji“shushangniao”,“shuxianiao”,he“gongxiangniao”(kezaishushangheshuxiatongshiqushi,tu1),danzhei3gemishigongnengqunzaishixingtehuaheyidongnenglidengfangmiankenengcunzaiyidingchayi。tongguoceduzhongzikuosanzhongjianhuzuodezhongxinxing(zhicongwangluozhongyigejiediandaolingyigejiediandezuiduanjuli)heqiduijihewangluojiegoudegongxian,keyipinggutedingdezhongjianhuzuoyijiwuzhongduijihewangluodezhongyaoxing。tamenyuceshejishuxianiaolei-zhiwuxianghuzuoyongjianggengduodejuxianyudangebankuai,ershejishushangniaoleihuogongxiangniaolei-zhiwuzhongjianhuzuojianglianjieduogebankuai。yinci,shejishushangniaoleihuogongxiangniaoleidezhongjianhuzuokenengduijihewangluojiegouhegongnengweichigengzhongyao。ciwai,ruguowuzhongtezhengsuzaoledongzhiwuzhongjianxianghuzuoyongwangluo,neimezhongjianxianghuzuoyongzaijihewangluozhongdezuoyongtongyangshoudaogewuzhongdegongnengtezhengjiqiquyukongjianfenbudeyingxiang。liru,daguoshi(zhongzi)zhiwu、fenbuguangfan、tixingxiaodewuzhongdesuoshejidezhongjianxianghuzuoyongwangwangbiyuxiaoguoshi(zhongzi)zhiwu、fenbuzhaihetixingdadewuzhongsuoshejidezhongjianxianghuzuoyongdezhongxinxinggenggao(jilianjieduogebankuai)。

  tongguozhijieguance(leijidiaocha479keshu,guanceshizhangwei4360 h.)hehongwaixiangji(leijidiaocha405keshu,guanceshizhangwei29160 h.)dui13gesenlinbankuai、19zhongzhiwu、47zhongshiguoniaoleijinxingleyanjiu,zhongdiangoujianhefenxileshushangheshuxiashiguoniaoleiyuzhiwuzhijiandezhongzichuanbojihewangluo。tamendeyanjiufaxian: zhongzichuanbodekongjianjihewangluoweizhongdumokuaijiegou;yushuxianiaoxiangbi,shushangniaohegongxiangniaoyuzhiwuzhijiandezhongjianhuzuozaijihewangluojuyougenggaodezhongxinxing,duijihewangluojiegoudegongxianyegengda;tongshishushangniaohegongxiangniaozaijihewangluozhongzhuyaobanyanzhe“shuniu”he“lianjiezhe”dejiaose,cujinlebutongbankuaizhijiandelianxi。yinci,shushangniaohegongxiangniaoduiquyuguochengyoujiaodagongxian,ershuxianiaozekenengzhuyaocanyujuyuguocheng。tamenhaifaxian,chuanbodazhongziyijifenbufanweijiaoguangdewuzhongsuochanshengdezhongjianhuzuoyouzhuyujihewangluodequyugongnengweichi。

  结合集合群落和多层网络分析,该研究首次明确了树上、树下食果动物的觅食生态位分化及其在集合群落、集合网络中扮演的功能角色,揭示了物种功能性状和分布范围在集合网络结构中的关键作用,为区域生物多样性及其生态功能的维持和保护提供了科学依据。该研究以“The functional roles of species in metacommunities, as revealed by metanetwork analyses of bird–plant frugivory networks”为题于2020年5月20日在国际生态学专业期刊Ecology Letters加拿大28开奖官网上在线发表(全文见网站链接: )。中国科学院动物研究所博士研究生李海东为第一作者,唐林芳(硕士生,已毕业)、贾陈喜副研究员等参加了野外数据采集,美国加州大学Davis分校Marcel Holyoak教授和德国弗莱堡大学Jochen Fründ博士参与了讨论和写作,中国科学院动物研究所肖治术研究员为论文通讯作者。该研究得到国家重点研发项目和国家自然科学基金项目的资助。

图1. 实验设计思路和主要研究结果。研究预测,集合群落中较高的种间相互用β多样性意味着模块状的集合网络结构。相反,如果集合群落中的局域群落间共享很多种间互作且具有较少的种间相互作用的局域群落是具有较多种间相互作用的局域群落的子集,那么集合网络为嵌套结构。图中,“树上鸟”为仅在树上取食的食果鸟类(红色图标),“树下鸟”为仅在树下取食的食果鸟类(黑色图标),而既在树上也在树下取食的鸟类为“共享鸟”(蓝色图标)。

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