Bernstein, Aaron, Naturwissenschaftliche Volksbücher, Bd. 17-21, 1897

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          <p>
            <s xml:id="echoid-s1225" xml:space="preserve">
              <pb o="109" file="117" n="117"/>
            treffen. </s>
            <s xml:id="echoid-s1226" xml:space="preserve">Wollen wir uns ein Bild der Flora jener Zeit machen,
              <lb/>
            ſo brauchen wir daher nur die
              <emph style="sp">Pflanzenwelt</emph>
            z. </s>
            <s xml:id="echoid-s1227" xml:space="preserve">B. </s>
            <s xml:id="echoid-s1228" xml:space="preserve">der
              <lb/>
              <emph style="sp">Hoch-Alpen und des hohen Nordens</emph>
            anzuſehen. </s>
            <s xml:id="echoid-s1229" xml:space="preserve">Die bei
              <lb/>
            weitem meiſten Arten dieſer Erdſtrecken zeichnen ſich durch auf-
              <lb/>
            fallend niedrigen Wuchs aus. </s>
            <s xml:id="echoid-s1230" xml:space="preserve">Die boreal-alpinen Arten müſſen
              <lb/>
            in kurzer Zeit zur Fruchtreife gelangen, wenn ſie überhaupt Nach-
              <lb/>
            kommen erzeugen ſollen, da während der längſten Zeit im Jahre
              <lb/>
            die Kälte und die Bedeckung des Erdbodens mit Schnee und
              <lb/>
            Eis, welche höhere Pflanzen niederbrechen würde, das Pflanzen-
              <lb/>
            wachstum hemmen. </s>
            <s xml:id="echoid-s1231" xml:space="preserve">Sie erzeugen daher nur eine kurze Sproß-
              <lb/>
            Unterlage und ſchreiten dann ſofort zur Bildung der Blüten.</s>
            <s xml:id="echoid-s1232" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1233" xml:space="preserve">Abweichend von der gegebenen Darſtellung lag es vor
              <lb/>
            kurzer Zeit noch nahe — entſprechend der früheren allgemeinen
              <lb/>
            Anſicht der Geologen, nach welcher das ganze norddeutſche
              <lb/>
            Flachland unmittelbar vor der Jetzt-Zeit von einem Meere be-
              <lb/>
            deckt geweſen wäre — die an ſalzhaltigen Örtlichkeiten des
              <lb/>
            Binnenlandes anzutreffenden ſalzliebenden Arten als einen
              <lb/>
            beim allmählichen Zurückweichen des Meeres an günſtigen
              <lb/>
            Stellen zurückgebliebenen Reſt der Flora der ehemaligen Meeres-
              <lb/>
            küſten aufzufaſſen, ſodaß hiernach alſo die
              <emph style="sp">Salzpflanzen</emph>
              <lb/>
            und nicht die Glazialpflanzen die älteſten Bewohner Nord-
              <lb/>
            deutſchlands wären. </s>
            <s xml:id="echoid-s1234" xml:space="preserve">Allein die Salzpflanzen haben gewiß
              <lb/>
            erſt ſpäter die in Rede ſtehenden Orte des Binnenlandes be-
              <lb/>
            ſetzt, indem dieſelben teils von der jetzigen Küſte nach Süden,
              <lb/>
            teils aus dem öſtlichen durch Salzboden ausgezeichnetes Steppen-
              <lb/>
            gebiet zu uns gekommen ſind; </s>
            <s xml:id="echoid-s1235" xml:space="preserve">denn manche dieſer Salzpflanzen
              <lb/>
            gehören überhaupt gar nicht zur Küſtenflora.</s>
            <s xml:id="echoid-s1236" xml:space="preserve"/>
          </p>
          <p>
            <s xml:id="echoid-s1237" xml:space="preserve">Die vorwiegend wohl aus dem Weſten ſpäter eingewan-
              <lb/>
            derte jetzige Küſtenflora Norddeutſchlands konnte natürlich erſt
              <lb/>
            nach dem Verſchwinden der Gletſcher-Eis-Maſſen Platz greifen,
              <lb/>
            und erſt dann war von der Küſte aus eine Beſiedelung der
              <lb/>
            Salzſtellen des Binnenlandes möglich.</s>
            <s xml:id="echoid-s1238" xml:space="preserve"/>
          </p>
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    </echo>
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