Page 128 - 《水产学报》2026年第2期
P. 128
2 期 水 产 学 报 50 卷
DO SPC TDS SAL PH ORP ZhD Chla TN TP TOC NO 3 _N NH 3 _N ZP
T PP
Mantel′s R
T
DO <0.2
SPC
TDS
Mantel′s P
SAL
0.001~0.01
PH
ORP 0.01~0.05
ZhD ≥0.05
Chla
TN Pearson′s P
TP
All TOC 0.5
NO 3 _N
NH 3 _N 0
ZP
PP −0.5
(a)
DO SPC TDS SAL PH ORP ZhD Chla TN TP TOC NO 3 _N NH 3 _N ZP TOC _N NO 3 _N
T PP DO SPC TDS SAL PH ORP ZhD Chla TN NH 3
T TP ZP PP Mantel′s R
T Mantel′s R
DO <0.2 T < 0.2
SPC DO
TDS SPC Mantel′s P
TDS
SAL Mantel′s P SAL
PH ≥0.05 PH 0.01~0.05
ORP ORP ≥0.05
ZhD ZhD
Chla Pearson′s R Chla
TN TN Pearson′s R
TP TP
SU 0.5 WT
TOC TOC 0.5
NO 3 _N NO 3 _N
NH 3 _N 0 NH 3 _N 0
ZP ZP
PP −0.5 PP −0.5
(b) (c)
图 7 珠江流域外来鱼类群落与环境因子相关性
(a) 一年中外来鱼类群落与环境因子相关性;(b) 丰水期时外来鱼类群落与环境因子相关性;(c) 枯水期时外来鱼类群落与环境因子相关性。
采用基于 Bray-Curits 距离的 Mantel 检验分析外来鱼类群落组成与环境因子之间的关系;右上角的矩阵表示 16 个环境因子之间的相关性,
左下角的连线部分表示外来鱼类群落与 16 个环境因子之间的 Mantel 检验结果。线宽部分代表 Mantel 的 R 统计量;线条颜色代表统计显著
性;颜色梯度表示 pearson 相关系数。
Fig. 7 Correlation between exotic fish communities and environmental factors in the Pearl River Basin
(a) correlation of exotic fish communities with environmental factors over the course of a year; (b) correlation between exotic fish communities and
environmental factors during flooding season; (c) correlation between exotic fish communities and environmental factors during dry season. The relation-
ship between exotic fish community composition and environmental factors was analyzed using the Mantel test based on the Bray-Curitis distance; the
matrix in the upper right corner represents the correlation between the 16 environmental factors, and the connected part in the lower left corner repres-
ents the Mantel test results between the exotic fish community and the 16 environmental factors. The line width portion represents Mantel's R statistic;
the line color represents statistical significance; and the color gradient represents pearson's correlation coefficient.
[7]
生生态系统带来巨大威胁 。获得评分最高的豹 和建群提供了有利条件,这些可能是得分高的原
纹翼甲鲇,其有着特化的肠道,能够利用空气中 因,同时说明 AS-ISK 在评估外来种的入侵风险
的氧气,因此对水体低氧的耐受能力较强,同时 上具有一定的可信度。因此,需要正确识别并评
其种群生活史具有较强的可塑性,生长快、性成 估外来物种的入侵风险,对入侵风险系数高的物
熟早,能够适应富营养化的水体环境,坚硬的外 种采取有效控制措施,加强珠江流域土著鱼类的
[32]
壳使其天敌较少 。有研究证实,豹纹翼甲鲇已 保护和管理。
在我国南方主要水系建立了种群,且有养殖逃逸记 外来物种入侵已成为威胁生物多样性的一大
录 。种特性为豹纹翼甲鲇在自然水体中的传播 关键因素,正确识别外来物种有助于有效防控外
[32]
https://www.china-fishery.cn 中国水产学会主办 sponsored by China Society of Fisheries
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