﻿98 
  

  

  Nichols: 
  The 
  vegetation 
  of 
  Connecticut 
  

  

  there 
  are 
  reentrants. 
  

  

  more 
  

  

  with 
  the 
  presence 
  of 
  salt 
  water 
  may 
  be 
  grouped 
  under 
  the 
  head 
  of 
  

   tide 
  levels. 
  Roughly 
  speaking, 
  it 
  can 
  be 
  said 
  that 
  the 
  distribution 
  

   in 
  a 
  horizontal 
  direction 
  of 
  the 
  various 
  seaside 
  types 
  of 
  plant 
  

   association 
  is 
  determined 
  largely 
  by 
  their 
  physiographic 
  relations,* 
  

  

  ■ 
  4 
  

  

  their 
  distribution 
  In 
  a 
  vertical 
  direction 
  largely 
  by 
  their 
  relation 
  

   to 
  tide 
  levels. 
  In 
  classifying 
  these 
  associations, 
  then, 
  both 
  sets 
  

   of 
  relations 
  must 
  be 
  taken 
  Into 
  consideration. 
  

  

  Plant 
  associations 
  grouped 
  in 
  relation 
  to 
  physiography. 
  — 
  With 
  

   reference 
  to 
  their 
  physiographic 
  relations 
  the 
  plant 
  associations 
  

  

  Fig. 
  2, 
  Depositing 
  shores 
  near 
  Watch 
  Hill, 
  Rhode 
  Island; 
  essentially 
  similar 
  

   to 
  corresponding 
  areas 
  in 
  Connecticut. 
  Beach 
  and 
  line 
  of 
  dunes 
  (with 
  Ammophila) 
  

   to 
  right 
  and 
  in 
  foreground; 
  salt 
  marshes 
  in 
  left 
  mid-distance. 
  

  

  along 
  the 
  scacoast 
  may 
  be 
  divided 
  into 
  two 
  groups: 
  the 
  associa- 
  

   tions 
  of 
  eroding 
  shores 
  and 
  bottoms, 
  and 
  the 
  associations 
  of 
  depositing 
  

   shores 
  and 
  bottoms 
  . 
  The 
  essential 
  features 
  of 
  an 
  eroding 
  shore 
  

   (Figs, 
  i, 
  3, 
  etc.) 
  are 
  the 
  presence 
  of 
  bluflFs 
  and 
  headlands 
  and 
  the 
  

   absence 
  or 
  sparse 
  development 
  of 
  beaches, 
  dunes 
  and 
  marshes. 
  

   Depositing 
  shores 
  (Fig. 
  2), 
  on 
  the 
  other 
  hand, 
  are 
  characterized 
  

   by 
  the 
  presence 
  of 
  beaches, 
  dunes 
  and 
  marshes, 
  and 
  by 
  the 
  ab- 
  

  

  * 
  This 
  generalization 
  applies 
  strictly 
  only 
  along 
  the 
  chores 
  of 
  the 
  open 
  Sound, 
  

   since 
  of 
  course 
  differences 
  in 
  the 
  salinity 
  of 
  the 
  water 
  also 
  affect 
  the 
  horizontal 
  dis- 
  

   tribution 
  of 
  the 
  plant 
  associations 
  where 
  the 
  salty 
  waters 
  of 
  the 
  sea 
  meet 
  the 
  fresh 
  

   waters 
  of 
  inflowing 
  streams. 
  

  

  