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Final Presentation - Multivariate Methodology Assessment ......Final Presentation - Multivariate...

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  • Multivariate Methodology Assessment

    Final Report on the Mission and Aransas Rivers

    James TolanJames Tolan

    Janet Nelson

    TPWD – Coastal Fisheries

  • Scope of Work

    • Physicochemical measurements

    • Water and sediment quality

    • Flow measurements

    • Nekton and benthic sampling

    • Instream and riparian habitat

    classification

    • Land cover classification

    Biological

    Physical Chemical

  • Assessment Methodology

    • Multivariate, community-based

    – Resemblance matrix

    • Highly visual techniques • Highly visual techniques

    – Cluster Analysis, MDS, PCA

    • Analysis based on bootstrap permutations

    – ANOSIM, SIMPER, RELATE

    Biological

    Physical Chemical

  • G

    Theoretical MD S – Imp aired

    Waterbody

    Transform: Square root

    Resemblance: S17 Bray Curtis similarity

    Stream A

    B

    C

    F

    E

    2D Stress: 0.1

    High

    G

    H

    Intermediate Exceptional

  • Geographic Setting

  • Segment 2001

    - 1 permitte d discharger into the

    Tida l Segment,

    - 2 permitte d dischargers above

    th e Tida l Segment

    Missio n River

    1 = Upper

    2 = Middle

    3 = Lower

    AL U - Presume d High

    Fully Supportin g for D.O.

    Non-Supportin g for Rec.

    Contact - Bacteria

  • ss on

    Mission 1

    Mi i 2Mission 2

    Mission 3

    Upstream Downstream

  • Segment 2003

    - 4 permitte d dischargers

    al l wel l Upstream

    - 5 permitte d dischargers belo w the

    Tida l Segment vi a Chiltipi n Creek

    Aransas River

    1 = Upper

    2 = Middle

    3 = Lower

    AL U - Presume d High

    Fully Supportin g for D.O.

    Non-Supportin g for Rec.

    Contact - Bacteria

  • ransas

    Aransas 1

    A 2Aransas 2

    Aransas 3

    Upstream Downstream

  • Wastewater Outfalls

  • Me

    an

    alin

    ity

    (PS

    U)

    M-A Study = Drought

    Sa

    linity (

    PS

    U)

    30

    40

    50

    60

    Spring Summer Fall Spring Summer Fall

    Me

    an

    S

    0

    10

    20

    Mission River (MR 1)

    Aransas River (AR 1)

    2008 2009

  • Water Colum n Profiles (Surface)

    2

    4 Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    Avg DO mg/L

    Secchi MR 1

    MR 2

    AR 3

    2D Stress: 0

    PCA Analysis MDS Means Plot

    -4 -2 0 2 4

    PC1

    -4

    -2

    0

    PC

    2

    Avg Temp

    Avg pH

    Avg Salinity

    MR 3

    AR 1

    AR 2

  • DataS onde Deployments

    MR 1

    AR 2

    MR 3

    2D Stress: 0.01

    2

    4 Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    PCA Analysis MDS Means Plot

    MR 2

    AR 1

    AR 3

    MR 3

    -4 -2 0 2 4

    PC1

    -2

    0

    PC

    2

    Temp_C

    DO mg/L

    pH

    Salinity

  • Sediment Composit ion (Middle)

    4

    6 Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    Gravel

    MR 1

    MR 2

    AR 2

    AR 3

    2D Stress: 0

    PCA Analysis MDS Means Plot

    -8 -6 -4 -2 0 2

    PC1

    -2

    0

    2

    PC

    2

    Organic Carbon, Total

    Percent MoistureSiltClay

    Sand

    MR 3

    AR 1

  • TKN

    W ater Quality Measurements

    MR 1

    MR 2

    AR 1

    2D Stress: 0

    2

    4

    6 Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    BOD

    TSS VSS

    Ammonia

    TKN

    Phosphorus

    Chloride Orthophosphate

    PCA Analysis MDS Means Plot

    MR 3

    AR 2

    AR 3

    -6 -4 -2 0 2 4

    PC1

    -4

    -2

    0

    2

    PC

    2

    BOD

    Nitrate-N

    Chloride Orthophosphate

  • W ater Quality Measurements

    2

    4

    6 Orthophosphate

    6E-2

    0.24

    0.42 BOD

    TSS VSS

    Ammonia

    TKN

    Phosphorus

    Chloride Orthophosphate 2

    4

    6 Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    BOD

    TSS VSS

    Ammonia

    TKN

    Phosphorus

    Chloride Orthophosphate

    PCA Analysis

    -6 -4 -2 0 2 4

    PC1

    -4

    -2

    0

    PC

    2

    0.6

    Nitrate-N

    Orthophosphate Overlay

    -6 -4 -2 0 2 4

    PC1

    -4

    -2

    0

    PC

    2 Nitrate-N

  • Nek ton – B ag Seines

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    2D Stress: 0.27

    MR 1

    MR 2

    AR 1

    AR 2

    2D Stress: 0.05

    MDS Configuration MDS Means Plot

    MR 2

    MR 3

    AR 3

  • Nek ton – B ag Seines

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    2D Stress: 0.27

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Season Spring

    Summer

    Fall

    2D Stress: 0.27

    MDS Configuration Seasonality

  • Nek ton - Trawls

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    2D Stress: 0.16 MR 1 AR 1AR 2 AR 3

    2D Stress: 0.01

    MDS Configuration MDS Means Plot

    MR 2

    MR 3

  • Nek ton – Trawls

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    2D Stress: 0.16

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Season Spring

    Summer

    Fall

    2D Stress: 0.16

    MDS Configuration Seasonality

  • Benthic Inverts (Middle)

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    2D Stress: 0.13

    MR 1

    AR 1

    2D Stress: 0

    MDS Configuration MDS Means Plot

    MR 2

    MR 3

    AR 2

    AR 3

  • MD S : Dat a Overlays Transform: Fourt h root Transform: Fourt h roResemblance: S1 7 Bray Curti s similarity Resemblance: S1 7

    2 D Stress: 0.27 Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    Bag Seines

    ot

    Bray Curtis similarity

    Salinity

    5

    20

    35

    50

    2D Stress: 0.27

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Nitrate-N

    0.1

    0.4

    0.7

    1

    2D Stress: 0.27

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    D.O.

    1

    4

    7

    10

    2D Stress: 0.27

  • MD S : Dat a Overlays Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Station MR 1

    MR 2

    MR 3

    AR 1

    AR 2

    AR 3

    2D Stress: 0.27

    Bag Seines

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Bay anchovy

    100

    400

    700

    1E3

    2D Stress: 0.27

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Western mosquitofish

    6

    24

    42

    60

    2D Stress: 0.27

    Transform: Fourth root

    Resemblance: S17 Bray Curtis similarity

    Atlantic croaker

    4

    16

    28

    40

    2D Stress: 0.27

  • Taxonomic Diversity

    20

    40

    60

    80

    100

    De

    lta +

    A A

    B

    A B A B A B

    20

    40

    60

    80

    100

    De

    lta +

    ns

    Bag

    Seine

    Collections

    MR 1 MR 2 MR 3 AR 1 AR 2 AR 3

    Station

    0

    2008 2009

    Year

    0

    20

    40

    60

    80

    100

    De

    lta +

    A

    B

    Spring Summer Fall

    Season

    0

  • Bag Seine Trawl Benthic Infauna Water Column Profile Water Chemistry

    Bag Seine ___

    Trawl 0.158* ___

    Benthic Infauna

    0.099 0.230* ___

    Agreemen t Amon g th e MD S Configurations

    Water Column Profile

    0.125* 0.230* 0.033 ___

    Water Chemistry

    0.063 0.024 -0.033 0.471** ___

    Sediments -0.002 0.051 -0.148 0.084 0.276*

    Probability of obtaining a larger correlation coefficient by random chance

    (based on 1,000 permutations) denoted by: * = prob. < 0.01, ** = prob. < 0.001.

    Significant correlations (ρs > 0.3) identified in bold.

  • Routi ne Field Parameters

  • Routi ne Field Parameters

  • MDS Means Plot

  • W ater Chemistry

    Highland Bayou

    Diversion Canal

    Mission River

    Texas City Pump Canal

    TCPC

    HBDC

    Mission River

  • W ater Chemistry

    Highland Bayou

    Diversion Canal

    Mission River

    Texas City Pump Canal

    TCPC

    HBDC

    Mission River

  • Trawl Collections

    Summer Season

    Collections

  • Study Streams

    Biological Physiochemical Sediment Instream Flow Habitat

    Average Taxonomic Diversity �o

    SIMPER analysis used to identify the best “candidate

    indicator taxa or

    constituents”

    Sensitivity of

    indicator taxa to

    changes in

    “other”

    chemical and

    physical data

    collected

    Part C

    Index Development

    Biocriteria For

    Tidal Streams Index Score

  • Coast-wide Nekton

    Abundanc e Patter ns i n Seines

    Bay anchovy Grass shrimp

    Gulf menhaden Brown shrimp

    White shrimp Silversides

  • Relationships to Env . Variables

    *** Normalized Abundance

    Trend line = Nonlinear form E[y] = a *

    xb

    Temperature Dissolved Oxygen Salinity

  • Coast-wide Nekton

    Abundanc e Patterns i n Trawls

    Bay anchovy Gulf menhaden

    Blue catfish

    Atlantic croaker

    White shrimp

    Silver seatrout

  • Relationships to Env . Variables

    Temperature Dissolved Oxygen Salinity

  • Summary (M /A Study)

    • Watershed characteristics (=Salinity) appears to be the dominan t factor structuring biologica l communities – Patter n consistent across th e multipl e levels of

    ecologica l integrity measure d for a number of studiesstudies

    – Eve n accountin g for extrem e drought conditions

    • Lowermos t Stations had the mos t “distinct ” nekton communities – Gear dependent

    – Agrees wit h th e Habitat assessment

  • Summary (M /A - Coastal)

    • Benthic Communities (and Aquatic Inverts) responded less to Salinity – Dominate d by opportunistic taxa an d species

    define d as “ubiquitous” – floodin g event re-sets

    • • DDii ssssooll vveed d OO xxyyggeenn ll eessss ii mpmpoorrttaannt t tthh aann SS aallii nniitty y in structuring the biologica l communities – Many estuaries wit h seasona l hypoxi a ar e som e of

    th e most producti ve systems for fisheries

    • The extreme euryhaline / physiologica l abilities o f the nekton almos t precludes a spatially applicable “IBI”

  • Summary (M /A – Coastal)

    • ________________________

    Biological

    Chemical Physical

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Multivariate Methodology Assessment Final Report on the Mission and Aransas Rivers James Tolan James Tolan Janet Nelson TPWD – Coastal Fisheries
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